3200 Digital Multiplexer Operation Manual © Case Communications Ltd 1997 X723-300151 0-1 Unit 15, Riverside Business Centre, Victoria Street, High Wycombe, Bucks HP11 2LT Web: www.casecomms.com Email: sales@casecomms.
STATUTORY NOTICES Case Communications Ltd. declare that this product conforms with the requirements of the European Communities Council Directive of 73/23/EEC on the harmonisation of the laws of Member States to electrical equipment designed for use within certain voltage limits. Case Communications Ltd declare that this product conforms with the protection requirements of Council Directive 89/336/EEC on the approximation of the laws of the member states relating to electromagnetic protection.
STATUTORY NOTICES APPROVAL The approval number for the 3200 multiplexer is NS/3660/12/H/452538. The 3200 equipment is approved for indirect connection to the PSN via the 4 wire E&M (SSDC5) PABX tie line ports and G.703 2048 kbit/s PABX ports and for direct connection to G.703 2048kbit/s and X.21 Nx64kbit/s 'Private circuits' subject to the following conditions:1) WARNING. Interconnection directly, or by way of other apparatus, of ports marked:'WARNING.
X723-300151 0-4 Issue 2
Contents 1 1.1 1.2 1.3 1.4 1.5 2 2.1 2.2 Equipment Detail General Description 3200 Facilities 1.2.1 Control of the 3200 1.2.2 Control Terminal Operating Modes 1.2.3 Configuration 1.2.4 Fault Reporting 1.2.5 Real Time Clock 1.2.6 Maintenance Facilities Mechanical Description Specifications 1.4.1 Common Equipment 1.4.2 Dual LIU Line Signal Characteristics Product Codes 1-1 1-1 1-5 1-5 1-5 1-6 1-11 1-12 1-12 1-13 1-16 1-16 1-17 1-21 Installation and Commissioning General 2.1.1 Modes of Operation 2.1.
2.3 Commissioning 2.3.1 Link and Switch Settings 2.3.2 Redundant System Control Card 2.3.3 Switch on Procedures 2.3.4 Initial Multiplexer Set-up 2.3.5 Alarm Indicators 2-11 2-11 2-12 2-15 2-16 2-16 3 3.1 Dual Line Interface Unit General 3.1.1 TS0 'Not Frame Word' Routing 3.1.2 Clock Recovery and Selection 3.1.3 Jitter Attenuation 3.1.4 Frame Structure 3.1.5 G.703 Clock Output 3.1.6 Link Settings 3.1.7 Switch Settings 3.1.8 LED Indicators Dual LIU Adaptors 3.2.1 DT315 75 Ohm I/O Adaptor 3.2.
5.3 5.4 5.5 5.6 6 6.1 System Mode Menu 5.3.1 Brief and Verbose Mode Selection 5.3.2 Echo and Noecho Selection 5.3.3 Control Terminal Configuration 5.3.4 Install Menu. E2PROM Programming 5.3.5 Security Password Modification Configuration Menu 5.4.1 Checking and Running Channel Configurations 5.4.2 Editing and Displaying Channel Configurations 5.4.3 DLIU Integrated Menu 5.4.4 Sync Source 5.4.5 Alarm Events, Route Alarms and External Control Relays 5.4.6 Circuit Assignments 5.4.7 Circuit Controls 5.4.
6.3 6.4 6.5 6.1.7 Statistical Reports Maintenance Facilities 6.2.1 Current Status Monitoring 6.2.2 Setting Data and Signalling 6.2.3 Displaying Data, Signalling and Peak Codes 6.2.4 Loops - Setting and Clearing 6.2.5 Running Self Test 6.2.6 Alarm Relay Setting and Clearing 6.2.7 System LED Test 6.2.8 Equipment Type and Version Display 6.2.9 Manual A/B Switching Network Problems Built-in Test Facilities NCS Fault Levels 6-9 6-11 6-12 6-13 6-14 6-14 6-17 6-18 6-18 6-19 6-19 6-20 6-21 6-23 7 7.1 7.2 7.
Figures 1-1 1-2 1-3 1-4 Typical System Block Diagram Typical Multipoint Configuration Front View of the 3200 Chassis (Typical Configuration) Rear View of the 3200 Chassis 1-4 1-11 1-14 1-15 2-1 2-2 External Ringing Supply Connections Ringing Voltage Backplane Links 2-9 2-10 4-1 4-2 4-3 Management Patching Block Diagram Network Management Patchfield Example Local/Remote Patchfield Example 4-7 4-10 4-10 5-1 Timeslot Check Diagram for Nx64k Operation 5-32 6-1 Position of Loops and Data Test Points
X723-300151 0-10 Issue 2
1 Equipment Detail 1.1 General Description This manual applies to 3200 units fitted with operating firmware DT981/6. The 3200 multiplexer is a software controlled multiplexer and switch providing multiplexing of voice and 64kbit/s data circuits in to 2048kbit/s or 1544kbit/s PCM streams, and Nx64kbit/s X.21 lines. The unit is capable of accessing up to four PCM streams via Port 1 and Port 2, allowing multiplexing of data on to any stream and cross-connection between streams.
interface when fitted in Port 1 or Port 2. (A separate manual contains information on the Dual LIU operating as a Smart card.) The Dual LIU works in conjunction with a G.703 I/O (75R or 120R) adaptor to provide interfaces to two G.703/G.704 line signals with optional bypass facilities. A G.703 synchronisation port is also provided. The G.703 I/O adaptors used with the Dual LIU provide the option of supporting a PCM and clock bypass.
A typical system block diagram is shown in Figure 1-1. If further PCM line interfaces are required, it is possible to fit Dual LIU cards in Ports 3 and 4, with the restriction of 31 timeslot access in each port. The 3200 chassis can also incorporate up to four 2048kbit/s G.703 to optical fibre conversion modules. Details of these modules can be found in the relevant Technical manual for the FOLD. A Series 3000 multiplexer power supply unit is required to power the 3200 chassis.
A B C D E F G 7 CHAN CARD SLOTS PORT 3 SIG 32 Timeslots PCM 1 PORT 1 PCM 2 D U A L P3 S3 S1 CROSS CONNECT SWITCH P1 L I U D U A L P2 S4 S2 L I U PCM 1 PORT 2 PCM 2 P4 SIG 32 Timeslots 6 CHAN CARD SLOTS PORT 4 A B C D E F Figure 1-1 Typical System Block Diagram X723-300151 1-4 Issue 2
1.2 3200 Facilities 1.2.1 Control of the 3200 The system controller supports an RS-232 port for connection to a standard ASCII VT100 VDU. This is used for local control and maintenance purposes. Password protection can be used with this port for increased security. Two or more multiplexers may be operated in Local/Remote mode where control of all multiplexers may be carried out from a VDU connected to one 3200, this is termed the 'local unit'.
1.2.3 Configuration 1.2.3.1 Configuration Fields The 3200 supports Channel, Smart and Management configurations. Channel configurations cover the set-up of all the channel cards, the Dual LIUs when fitted in Ports 1 and 2, synchronisation plus the cross-connect mappings on the system controller. There are 14 channel configurations which are stored in non-volatile RAM and edited in an edit buffer.
1.2.3.3 Dual LIU Configuration Options When fitted in port 1 or 2, the Dual LIU is configured from the channel configuration options. The following are selectable for each PCM line: Multipoint mode: when selected, timeslots are connected directly between the 2 line interfaces on the dual LIU, by-passing the cross-connection of the system controller. This can be useful in minimising delays in a network.
-3 this does not affect the detection of 1 in 10 error rate required for line service monitoring. 1.2.3.4 Synchronisation Options The Series 3000 can be synchronised to a 2MHz or two 8KHz, known as 8k1 and 8k2, internal clock busses which are generated by certain channel cards by recovering a phase locked clock from external interfaces. Access to the 2MHz clock bus is fully controlled by the system controller. However, access to the 8KHz busses are not.
Cards with only 1 circuit will only support circuit 1, and dual cards will only support circuits 1 and 2. 1.2.3.7 Timeslot Assignment Each channel card circuit may be assigned a timeslot(s) from the 32 available in each port stream (P1, 2, 3 and 4). Each port stream timeslot has associated with it a 'TS control' byte, which is used to control the gain of the A-D D-A converters on VF channel cards for setting the analogue interface levels. It is not used on data cards.
Cross-connection modes supported are: Simplex: for uni-directional and broadcast data. Duplex: for bi-directional data. Multipoint: for point to multipoint services. To 'undo' a cross-connection it is necessary to allocate fixed data to the outgoing timeslot.
TS * To/From S1 TS1 Master Slave(s) PORT 3 2 3 1 S3 & & & S2 * Incoming timeslot broadcasts to all source timeslots. TS1 Slave(s) S4 PORT 4 Figure 1-2 Typical Multipoint Configuration 1.2.4 Fault Reporting The 3200 has comprehensive fault reporting facilities. All faults are logged as messages in a fault store (capable of storing the last 64 faults) to show the fault history, as well as being held in an active faults list to show current faults.
Fault messages may be displayed directly on the local RS-232 terminal as the faults occur, or an Alarm Service Request (ASR) mode may be selected. In ASR mode, fault messages are not automatically displayed, instead an ASCII BELL character is sent to the terminal every minute until the user manually requests the new fault messages to be displayed. A printer may be attached to the terminal to print out the faults as they are displayed.
Display Peak Codes The data display can only display fixed unchanging data patterns which is therefore not suitable for checking analogue encoded circuits. A 'Peak codes' display allows the digital code of an analogue signal, and its equivalent power level to be displayed for any incoming timeslot. The circuit must be coded to CCITT G.711 A law for this to operate correctly. Loopbacks Various loopback facilities are provided to aid circuit testing. Local loops; loop the PCM line signal back to the 3200.
CHANNEL CARD PORT 4F CHANNEL CARD PORT 4E CHANNEL CARD PORT 4D CHANNEL CARD PORT 4C CHANNEL CARD PORT 4B CHANNEL CARD PORT 4A CHANNEL CARD PORT 3G CHANNEL CARD PORT3F CHANNEL CARD PORT 3E CHANNEL CARD PORT 3D CHANNEL CARD PORT 3C CHANNEL CARD PORT 3B CHANNEL CARD PORT 3A DUAL LIU PORT 2 DUAL LIU PORT 1 SYSTEM CONTROL (Main) SYSTEM CONTROL (Standby) Figure 1-3 Front View of the 3200 Chassis (Typical Configuration) X723-300151 1-14 Issue 2
Figure 1-4 Rear View of the 3200 Chassis X723-300151 1-15 Issue 2
With the front panel removed the chassis provides for the mounting of up to 17 printed circuit boards. The extreme two left hand positions are for system control cards. These are marked SM (Main). All input/output connections to the channel cards are made via connectors on the rear of the unit. These connectors are designed to be optionally fitted with a universal I/O adaptor (DT280) or DIN 41612 connectors (See Section 2.2.6).
1.4.2 Dual LIU Line Signal Characteristics Line Rate: Stability: Line Code: Transmit Signal Level: 2048kbit/s ±25ppm over 5 years when free running HDB3 ±2.
Service: System: Isolated changeover relay contacts Isolated changeover relay contacts Alarm contact rating 1A @ 50VDC (Resistive) 50VA External Status Inputs: 5 external status inputs are provided: Characteristics: General purpose inputs Active: Inactive: -60VDC < input voltage < 0.8VDC (Generally 0V) 1VDC < input voltage < 5VDC or open circuit The external equipment must be capable of sinking 0.25mA when applying 0V, and 63mA when applying -60VDC.
Network Port: Four V.28 inputs Four V.28 outputs (9 pin D-type connector) Gain The gain through the system to or from the channel interface backplane connector for a channel containing a voice encoded signal is fixed at 1. Refer to the relevant VF channel card manual for gain contributions attributable to the channel card. Quantisation Distortion The quantisation distortion through the system to or from the channel interface backplane connector for a channel containing a voice encoded signal is 0 qdu.
Delay The delay through the system may be calculated from the following diagram:- 2048 kbit/s INPUT LINE INTERFACE OUTPUT LINE INTERFACE 9 µs Min 12 µs Typ 98 µs Max 184 µs DUAL LIU DTE241 2048 kbit/s Port 3/4 Only Port 3/4 Only MT 8980 For delays attributable to CROSSPOINT other line interface cards see relevant technical manual MT 8980 CROSSPOINT Min 8 µs Typ 125 µs Max 133 µs SYSTEM CONTROLLER Backplane Interface MT 8980 CROSSPOINT CHANNEL CARD MT 8965 MT 8965 CODEC CODEC 270 µs 210 µ
Environmental: Storage temperature: Operational temperature: Humidity: -20oC to +50oC 0oC to +50oC 5 to 95% non condensing 1.
. X723-300151 1-22 Issue 2
2 Installation and Commissioning 2.1 General Installation and commissioning of the equipment consists of carrying out all necessary work prior to configuration for network transmission requirements. Follow Section 2.2 for physical connections noting particularly the cabling requirements for the PSU alarms (2.2.4). Follow Section 2.3 for Link and Switch settings noting in particular the battery link (2.3.1). Check the Dual LIU and I/O adaptor link settings (Section 3.1.5).
to various 'sub-trees' and eventually to 'leaves' which are individual commands. Selection of the route through this tree from the current menu is by entering selection characters as defined in each menu along the way. These selection characters may be entered singly resulting in prompts at each menu level, or as a complete string.
*> This prompt is given after a command has successfully been completed ?> This prompt is given after an invalid input line which may be due to an invalid menu selection, or an invalid parameter for a particular command, in this case an error message would have already been displayed in brief and verbose modes. 2.1.3 Special Input Control Characters The following input characters have special meanings: Esc Aborts the current input.
character required to make the selection in upper case, where possible it will be the first character of the option name. 2.2 Installation This equipment must only be installed by suitably qualified service personnel. Please ensure you read the statutory notices in the preface of this manual before proceeding. 2.2.
2.2.3 Power Connections and Earth Bonding The 3200 should be wired to the power shelf using the flying lead protruding from the rear of the unit. This lead will connect directly to the socket situated on the rear of the power supply shelf. The power supply shelf may be situated above or below the 3200. Earth Bonding Correct earth bonding of the chassis is important if the equipment is not to be affected by electrostatic discharge (ESD) or other environmental interference sources.
37-way D-type Plug Pin No.
2.2.5 PCM and G.703 Clock Connections The Dual LIU utilises either the DT315 or DT316 I/O adaptor for interfacing to 75 or 120 ohm lines respectively. These plug into the I/O connectors shown in Figure 1-3. The DT315 has 75 ohm BNC unbalanced connectors, with the 'screen' of the transmit connector earthed by mechanically securing it to the body of the I/O adaptor. The 'screen' of the receive connector is isolated from the body of the I/O adaptor with insulating washers.
This adaptor provides additional screening and must be used where compliance to EMC specifications are required. The pin connections are shown in the relevant channel card manual. 2.2.7 Network Management Connections Network management is connected to the unit via a 9-way D-type socket. This port uses V.28 signal levels. The COM signals on the port are defined by the System Controller Patchfield. Note: it is possible to redirect the local port VDU access to the Network Port using these Patchfields. Pin No.
Warning: Care should be exercised to ensure that the terminal being connected to the multiplexer local port shares a common earth with the multiplexer, otherwise permanent damage may result. 2.2.9 Ringing Voltage Connections When using any 2-wire loop disconnect subscriber interface card, an AC ringing supply will be required. The ringing voltage may be supplied by an internal ringing generator card DT579, or from an external supply connected to a terminal block on the rear of the equipment.
The RS terminal is used to indicate when ringing voltage is required to switch on an external ringer, it is an open collector O/P. When RS = 0V (battery +ve) then ringing voltage should be present on RV and RR. The RS terminal does not have to be connected, ringing voltage may be present continuously across the RV and RR terminals.
2.3 Commissioning 2.3.1 Link and Switch Settings The 3200 may be controlled via its local port, a DCE V.24 RS-232 serial interface. This port is configured by switch SW1 on the front of the system control card DTE221. Switch SW1 is read at power up and periodically to allow configuration of the local port to be modified once powered up. Switches S2 to S8 of SW1 control the setup of local port. Options available are shown in Table 2-5.
2.3.2 Redundant System Control Card A second (standby) system control card may be fitted in the far left hand (S
Standby Operation When the standby system controller has received all configuration information required to take control, it will configure itself and then wait for control.
Inhibit Command (!MSRI) This command is available to inhibit fault reporting and communication between the off-line and on-line controllers. This facility MUST be used before removing an off-line system controller from the multiplexer. If this facility is not used, removal of an off-line system controller may result in corruption of data through the multiplexer. The 'Inhibit' condition will remain for 2 minutes after which time communication and fault reporting will resume as normal.
iv) Refit new system controller. v) No more change-overs or removals should be attempted until the 2 minutes is completed and the off-line system controller has received all of its configuration data from the on-line system controller. This is indicated on the off-line system controller by the top red LED illuminating while configuration data is being transferred, and then extinguishing when all configuration data has been passed.
On completion the VDU should display 'self test passed' if not it will indicate failure and list the failed items. The self test will fail if Dual LIU cards in ports 1 and 2 are not fitted with I/O adaptors. 2.3.4 Initial Multiplexer Set-up Install the Dual LIU and channel interface cards in the required port slots.
System Alarm Power/Active All the LEDs are red except for the Power/Active LED which is green. This LED will be on continuously when the system controller is active, and will flash if the system controller is the standby card in redundant operation when equipped. In addition to these alarms, channel cards have LEDs to indicate alarm conditions, however these can only be viewed by removing the front panel. See Section 3.1.8 for a description of the LED indicators on the Dual LIU.
. X723-300151 2-18 Issue 2
3 Dual Line Interface Unit 3.1 General Dual Line Interface Units (DTE241) installed in ports 1 and 2 must be fitted with DT986/2 or later firmware. When fitted to port 1 or port 2, the configuration of the Dual LIU is transparent to the user. The Dual LIU will be listed as a DT310 (base card) in the Equipment map. The Dual LIU provides an interface to two 2048kbit/s PCM streams. The PCM electrical signals comply to CCITT recommendation G.703 as either unbalanced 75 ohm or balanced 120 ohm interfaces.
Mode 1 (Default) Mode 2 Mode 3 Mode 4 Mode 5 Mode 6 Mode 7 Mode 8 The incoming NFW from the relevant line is written to the relevant patchfield with the Remote Alarm bit set to a 1. The outgoing NFW is read from the patchfield and the Remote Alarm bit will be set to a 0. This allows the use of patchfield 995/D This is the same as mode 1 except that the Remote Alarm bit is not masked and all bits may be used by the patchfield to give TS0 transparency.
The following options will be presented whilst configuring each mode of operation for the Dual LIU, to enable the TS0 routing options to be selected. The preceding display will depend upon the LIU mode selected. 1 Normal 2 Normal plus Remote Alarm 3 L1 to TS0 4 L2 to TS0 5 L1 to TS0, L2 to TS1 6 L1 to TS0 (DT585) 7 L2 to TS0 (DT585) 8 L1 to TS0 (DT585) , L2 to TS1 (DT585) TS0 mode 1 > 3.1.
3.1.5 G.703 Clock Output The timing for the G.703 clock output is sourced from the system clock (PLL) except under bypass conditions when it is sourced from the G.703 clock input. The G.703 clock output can be configured to be enabled or disabled when the multipexer is free running. 3.1.6 Link Settings All links on the Dual LIU are for factory use only and must be fitted in the following positions: TL1 and TL2 TL3 must be fitted LK1 - LK11 LK12 1-2 1-2 2 - 3 (middle) 3.1.
The miscellaneous LED for each line will illuminate for the following reasons: 1) 2) 3) 4) 5) 6) 7) 8) 9) 10) 11) PCM Loss AIS Frame Sync Loss Error Rate 10-3 Frame Slip Multiframe Sync Loss TS16 A.I.S Low Error Rate Line Output Fail Local Loop Incoming Loop Both miscellaneous LEDs will illuminate for the following reasons.
3.2.2 DT316 120 ohm I/O Adaptor This adaptor uses three 9-way D-type sockets for connection to the two PCM lines and the G.703 clock. The connections are balanced and are as follows: PCM connectors PCM Out PCM In Ground 5 and 9 1 and 6 3 G.703 Clock connector Clock Out Clock In Ground 4 and 8 2 and 7 3 Bypass When the bypass relays are in the un-powered state, i.e. if the LIU is removed from the chassis or if bypass is enabled by software, the relay contacts will be in the bypass position.
4 Management Configuration 4.1 Introduction The multiplexer may be controlled either locally by a terminal connected to its local RS-232 port or by a Network Control System (NCS) connected to the V.28 network management port. If the 3200 to which the NCS is connected is fitted with redundant system controllers, alarm panel DT245 must be fitted to allow the NCS to work with the standby controller. Access to spare bit capacity in TS0 is provided for networking and remote control.
patchfields for LIU to system controller, or LIU to LIU communications. Several LIUs, for example, could broadcast the polling sourced by the system controller patchfield. The response from any of the LIUs will be fed back to the system controller patchfield via a logical ‘ANDing’ arrangement inside the LIU patchfields and a wired OR connection to the Mbus. It should be noted that all nodes that have not been polled, return a Null response which is to output logic 1 continuously.
4.3 Dual LIU Patchfield The patchfield on the Dual LIU is divided into two halves. Each half provides the communication of management data between the TS0 nonframe word of one of the PCM lines and the 'M' bus. Each half of the patchfield may have one of seven pre-programmed patchfields independently selected for each management configuration. Table 4-2 shows the patchfields that have been pre-programmed into the dual LIU management firmware DT995D.
4.4 Examples of Management Patchfields Some examples of possible network management patchfield selections are described and relate to Figure 4-2 and patchfields 990C and 995D. EXAMPLE 1 - SOURCE POLLING This configuration would use system controller patchfield 2 and dual LIU patchfield 2. This configuration would be used where the multiplexer is used as the 'master' on a network. The ‘master’ is the node to which NCS is physically connected to in order to gain access to the Network.
Branch B polling and responses work in a similar way using PCM line 2, management bus line M3 and UART B. EXAMPLE 3 - RECEIVE POLLING AND TRANSMIT ON This configuration would use system controller patchfield 2 and dual LIU patchfield 4. In this example the multiplexer is a 'slave' on the network with the LIU working in a 'ring' network. In this application the polls and responses received on one PCM line need to pass through to the other and vice versa.
end will pass through the Dual LIU to the system controller, via the M1 line and UART A input to the local port. At the Remote end, the system controller will receive data from the relevant Dual LIU's line 1 via the M1 bus. This data will then be used to control the multiplexer via UART A. Return data will be sent from the system controller to the Dual LIU's output stream via the M2 line. Operation with remote control using Dual LIU Line 2 is similar, but uses UART B and M3 and M4.
Figure 4-1 Management Patching Block Diagram X723-300151 4-7 Issue 2
PATCH NUMBER 1 2 UARTC UARTC RS232 COMi4 RS232 COMi4 3 UARTC UARTC RS232 RS232 COMi4 RS232 COMi4 RS232 RS232 RS232 UARTC M3 COMi1 COMi2 M1 COMi1 COMi2 UARTA M3 COMi1 COMi2 COMi3 COMi4 UARTB COMi2 COMi3 M1 UARTA COMi1 COMi3 M1 UARTA COMi2 COMi3 M3 UARTB COMi1 COMi3 M3 UARTB UARTA M1 COMi2 UARTA M1 COMi1 COMi1 COMi2 COMi1 COMi2 UARTB M3 COMi4 COMo3 M1 UARTB M3 COMi3 COMo4 COMi3 M3 COMi3 M3 M3 COMi3 M1 UARTA M1 UARTA UARTC COMi1 UARTA COMi1 UARTA 7 UARTC M1 UARTC
LINE 1 - PATCH 1 2 3 B5 4 B4 M1 M2 5 6 7 M1 M2 M1 M2 M1 M2 B7 B7 B6 LINE 2 - PATCH DEST 1 2 3 B4 X4 B5 X4 B4 X4 X4 M1 M2 M1 M2 M1 M2 X4 X2 B7 X3 X3 M3 M4 M3 M4 B5 B5 B4 M3 M4 X3 X4 M1 M2 M2 B7 B6 B6 X2 B7 X2 B6 X2 X2 M3 M4 M4 B1 B1 X1 B4 X1 B5 X1 X1 M3 M4 B6 X3 M3 M4 B6 M1 B4 M1 M2 7 X2 M3 M1 X3 M2 DEST 6 X1 X4 B4 5 X1 X3 B5 4 M3 M4 M3 M4 B7 X2 M3 M4 B8 B5 B6 M3 M4 B7 B8 Table 4-2 Dual LIU Patchfield DT995D Notes: 1. 2. 3. 4. 5.
Mux 1 Source Polling PCM Mux 2 Mux 3 Receive Polling and Transmit on Receive Polling and Terminate PCM V.28 N.C.S.
5 Multiplexer Configuration 5.1 Menu Tree 5.1.1 Menu Operation Menu selections are accomplished by entering the capital/uppercase letter displayed for the required option and pressing return. The display will pass to the next associated sub menu or prompt for operator input. See Section 2.1 for a full description of control terminal operation. The following sections provide information on the operation of the various menu commands.
If an incorrect password is entered then the menu will revert to the closed mode. There is no limit to the number of attempts to gain access. () Maint | Fault | mOde | Configure | Time | Remote | Smart | closE > Open mode If the multiplexer is operated in none secured mode (security off) a password is not required and the root menu will remain open. The display is the same with the addition of the node ID code at the left. (P63) Maint | Fault | mOde | Configure | Time | Remote | Smart | closE > 5.1.
5.1.5 Configuration Menu Configure Channels - see details below Current Management Status Current Run Edit Load Save Modify sYnc Fcode Bypass Mode Error List Install install A II Remove iDent Equipment map Channels line1 line2 G.
5.2 Time Menu The multiplexer supports a real time clock. The time menu options provide date entry in the form: day of month, month, year. Using this together with the time data (day, hour, minute) the multiplexer is able to calculate the current week number and provide support for weekly timed event control. The number ranges are 1 to 52 for the week of the year, day 1 to 7 for the week day (Sunday normally = day 1), and standard 24 hour clock for hour, minute and second.
To set up further timed events, the operator first inserts all of the regular weekly events giving 0 as the week designator. To modify a selected week the operator inserts events specifying the selected week number and normal event data. The inserted event will then only occur within the given week number and run until the next week 0 event or another event for that week. Note: Timed events are intended for multiplexer configuration control in a stand-alone environment.
Removing Timed Events The operator may delete events by using the 'Remove' menu option and specifying the event number. The specified event will be deleted and all following events re-numbered. A consecutive range of events may be removed by specifying the start and end event. (T) Display | Set | Events >E (TE) List | Insert | Remove | Enable | Disable | Status >R start event, end event >4,7 Enabling Timed Events Once the timed events have been created they may be enabled using the 'Enable' menu option.
5.3 System Mode Menu 5.3.1 Brief and Verbose Mode Selection The power up state for these options are defined in the 'mOde' 'Install' menu, but can be overridden with this command. Brief mode is intended for test purposes or by an experienced programmer wishing to use a computer to download a configuration through the local port for example. The unit must be in verbose mode to operate with the NCS.
2 5.3.4 Install Menu. E PROM Programming The operator may select a range of modes of operation using the 'Install' menu option. This will show the current setting and present each configurable mode option and allow the operator to change the setting. If no change is required then pressing the Return/Enter key will skip to the next item.
(O) Verbose | Brief | Echo | Noecho | Terminal | Install *> The modes of operation are stored in an E2PROM and the saving action can take up to one minute to complete. The E2PROM does not require battery back up and the information will be retained during power off conditions even if the battery is disconnected.
Redundant Mode Operation This facility must be enabled if a redundant system controller is fitted. Expansion Mode Operation This facility is not available in these multiplexers and must be set to disabled. Alarm Event Detect Period If a system configuration is programmed for an alarm event, then the alarm fault must exist for the specified period prior to the event occurring.
Note that the following two items relate to a DomainView feature for collecting statistics, and do not affect the general operation of the multiplexer. For normal operation with NCS, these features must be disabled. 1 Network CRC Upload enabled (0=disable, 1=enable) > Network CRC Upload Timer Offset 300 (180 to 720) > This enables and disables the CRC4 upload function in the node.
It should be noted that 9600 is only for local Test access to the Network Management UARTs on the System Controller and must not be used across the network. Each management configuration (1-14+Default) specifies one of the seven patchfields available on the System Control cards and Dual LIU cards fitted in ports 1 and 2. Note that the patchfields for any Dual LIUs fitted in ports 3 and 4 are set by hardware switches.
5.4 Configuration Menu 5.4.1 Checking and Running Channel Configurations The operator must select 'Configure' 'Channel' (CC) from the root menu and may then display which is the 'Current' configuration, 'Run' a new configuration or enable/disable the 'Alarm events' for ALL configurations using the following menu commands. (CC) Current | Run | Edit | Alarm event > 5.4.
The following descriptions of configuration options show the 'Modify' and 'Display' formats for each option. Port Integrated Menu Support The 3000 Series provides integrated menu support for some channel cards, e.g. Dual Nx64 LIU and Dual G.703 DLIU. Refer to the channel card manuals for the menus provided for all cards except Dual G.703 LIU which is covered in this manual.
These parameters may be set individually for line 1 or line 2. The user may also select the state (enabled or disabled) of the G.703 clock output when the multiplexer is free running via G.703 Clk o/p menu. 2) F code This will allow the on-going data in each timeslot and associated signalling to be determined should the source data fail. The data may be set individually for line 1 and line 2. Note: ''F' Codes are overwritten with FFH when the respective timeslot is a multipoint timeslot.
momentarily on the host equipment and also on equipment connected to the host. 2 Terminal. This will isolate line 1 from line 2 providing two separate PCM paths to the cross connect switch. Signalling may be different on line 1 and line 2 (CAS or CCS) and fault logging may be individually set as for multipoint. In terminal mode, the mapping of PCM timeslots to the backplane streams is fixed.
be set greater than the change over delay by the amount of hold period that is required. Time delays are selectable between 0 and 25 seconds in steps of 100ms. iv) Dual management path When this facility is enabled, management data will operate as in terminal mode e.g. i) ii) iii) iv) TS0 data from line 1 will be written to line 1 patchfield. TS0 data from line 2 will be written to line 2 patchfield. Data read from line 1 patchfield will be written to line 1 TS0.
Change-over Operation The decision to switch or not to switch will be made on the basis of the table below when the delay time expires. Faults which occur and clear within the switch over delay time will not be considered for the purposes of the decision table.
6) CRC4 The CRC4 error checking facility may be individually enabled or disabled for line 1 and line 2. If CRC4 is enabled, the user has the option to enable/disable the low error rate detection using CRC4. If enabled, the low error rate is calculated using CRC4. If disabled, the low error rate is calculated using the timeslot zero frame word.
Up to 31 timeslots may be selected and timeslots which are already connected will be shown as 'Duplex'. To disconnect an allocated timeslot enter U. MULTIPOINT Selecting multipoint operation is exactly the same as ‘Duplex’ except that the timeslots are also allowed to pass through from Line 1 to Line 2 in duplex as well as being dropped/inserted to the relevant stream on the cross connect switch. The timeslot fromthe switch is multipointed (logically ‘ANDed’) with the through timeslot from the other line.
5.4.4 Sync Source A menu command allows the operator to modify the sync source and sync priority selections for the configuration of the multiplexer. Up to four sync source selections can be entered after which the list will be terminated with free run. Modify Format Each sync source selected will be displayed in turn until freerun is reached. The last sync source in any selection will always be free run.
The ‘port’ selection allows the user to select channel cards which supports 2048 kHz clock bus as the sync source multiplexer. In the example above, the line 2 of the card fitted in port 3, card slot c has been selected as the priority 1 clock source. Selection of the clocks is automatic. 8k1, 8k2 options allow the user to select the 8k1, or 8k2 busses as the sync source.
(CCEMA) Alarm event | Route alarms | Extern relays | Card out >A enter start stream, start circuit >P3, A1 config. options 1-14 (U = unassigned) > (P3, cct A1) alarm config Unassigned > (P3, cct A2) alarm config 4 > (P3, cct A3) alarm config Unassigned > (P3, cct A4) alarm config Unassigned >5 (CCEMA) Alarm event | Route alarms | Extern relays *> | Card out >A PCM streams for Dual G.
5.4.5.2 Route Alarms Modify Format (CCEMA) Alarm event | Route alarms | Extern relays | Card out >R (Route 1 ) Stream 1 > (Route 2 ) Stream 2 > (Route 3 ) Stream 3 > P4,B2 (Route 4 ) Stream 4 > S3 (Route 5 ) Port 3, Circuit A1 > (Route 6 ) Port 3, Circuit A2 >S4 (Route 7 ) Port 4, Circuit A1 > (Route 8 ) Port 4, Circuit A2 > P4,B1 (CCEMA) Alarm event | Route alarms | Extern relays | Card out *> The default circuits for route alarms 1 to 8 are listed in Sec 5.4.18 (10).
This action will cause external relay number one to be operated when the configuration is run. Display Format (CCEDA) Alarm event | Route alarms | Extern relays | Card out >E ext 1 relay Enabled ext 2 relay Disabled ext 3 relay Disabled ext 4 relay Disabled (CCEDA) Alarm event | Route alarms | Extern relays | Card out *> 5.4.5.
Modify Format (CCEMP) Assigned cct | Circuit ctl | Smart configs | p1 | p2 | p3 | p4 >A port, first, last timeslot >P4 (P4,TS 1) cct = , TS control = 00000000B >A1, 10001010B (P4,TS 2) cct = , TS control = 00000000B >A2 The first timeslot to be assigned may be selected to be TS0 to TS31. If no first timeslot is selected, TS1 will be presented as in the example above. This menu option also supports a block assignment mode. If values are entered for the first and last timeslot, then only one circuit i.d.
(P4, cct A1, TS 5),control 1 = 11111111B, (P4, cct A2, TS 6),control 1 = 10100111B, (P4, cct A3, TS 7),control 1 = 11011011B, (P4, cct A4, TS8 ),control 1 = 11011101B, control 2 = 11111111B control 2 = 11111111B control 2 = 11111111B control 2 = 10110101B 5.4.8 Smart Configurations Each channel configuration must specify an associated configuration number for each smart channel card installed.
Modify Format (CCEMC) Fcode table | Channel assign >F Fcode no (1 to 16) >1 1 data, signal = FFH; FH > 2 data, signal = FFH; FH >AAH,AH 3 data, signal = FFH; FH >55H,5H 4 data, signal = FFH; FH >01H,FH 5 data, signal = FFH; FH > 6 data, signal = FFH; FH > 7 data, signal = FFH; FH > 8 data, signal = FFH; FH > 9 data, signal = FFH; FH > 10 data, signal = FFH; FH > 11 data, signal = FFH; FH > 12 data, signal = FFH; FH > 13 data, signal = FFH; FH > 14 data, signal = FFH; FH > 15 data, signal = FFH; FH > 16 data
5.4.10 Cross-Connection configuration The stream numbers on the cross-connect switch directly relate to the PCM lines of Dual LIU cards as follows: S1 S2 Port 1 line 1 Port 1 line 2 S3 S4 Port 2 line 1 Port 2 line 2 See section 1 Figure 1-1 Timeslots may be cross-connected between any stream, between any port or between any stream and port without restriction e.g. P3 timeslot 8 to S3 timeslot 27. The cross connection may be Simplex (unidirectional) or Duplex (bi-directional).
Example 2 (CCEMCC) Simplex | Duplex | Fixedata assign | Multipoint >D output stream, start timeslot, end timeslot >P4, 22 (P4; TS 22; Fixedata ;) from, TS, = ; >S2,1 (P4; TS 23; Fixedata ;) from, TS, = ; >P3,2 (P4; TS 24; Fixedata ;) from, TS, = ; >S1,1 In examples 1 and 2 the operator has elected to assign timeslots to streams one at a time.
Nx64k Cross-connection For Nx64k data groups, the time delay through the network must be the same for all timeslots. This requires some care when configuring the multiplexer’s cross connection. If possible, configure the cross connection so that the offset between each of the source timeslots within the Nx64k block and the associated output timeslots of the Nx64k block are the same. For example, consider the simplex block cross connection. P3,TS1 to 3 cross connected to P4,TS 5 to 7.
1 2 2 2 3 0 0 0 1 2 0 4 8 1 0 4 8 6 •••••••••••••••••••••••••••••••• Source Time Slot 1 1 0 0 1 2 2 2 3 0 0 0 1 2 2 2 3 0 2 2 0 4 8 6 4 8 1 0 4 8 6 0 4 8 1 0 •••••••••••••••••••••••••••••••• •••••••••••••••••••••••••••••••• Output Time Slot Fig 5.
5.4.11 Fixed Data Assignment The Fixed Data mode allows a permanent fixed code to be output in the assigned timeslots and CAS signalling channels. The operator should enter the Fcode number (1-16) from the Fcode table and not the data itself. Allocating fixed data is the only means of disconnecting a cross connection. If the cross connection is in Duplex it is necessary to individually assign fixed data for each direction otherwise a Simplex connection will remain.
Display Format (CCEDC) Fcode table | Channel assign | Multipoint | Broadcast >M output stream, timeslot >S1 (S1, TS 1, Multipoint ,) from P3, 2, P3, 5, P4,1 (S1, TS 2, Multipoint ,) from P3, 6, P3, 7, S4,2 (S1, TS 3, Multipoint ,) from P3,18, P3, 9, P3, 23, S3, 8 Note that the first timeslot entered is displayed as the last, since it will have the longest delay through the cross-connect switch. 5.4.
5.4.16 Management Configuration Linking The management menu incorporates a menu option for the linking of management configuration changes to channel configuration changes. In linked mode, the management configuration would be re-selected with every new channel configuration and/or timed event change. Each channel configuration field will run the management configuration with the same ID number if 'link' is enabled. Under NCS control the linking of configurations is ignored.
Cards must be removed from the equipment map in order to clear the map mismatch fault after a card has been removed from the chassis. If a card is fitted, but is not installed in the equipment map for that card slot, a map mismatch fault will not be raised and fault logging from that card will be inhibited. Listing Current Map (C) Channel | Management | Link | Status | Equipment map >E A list of all cards mapped in or fitted is obtained by selecting 'List'.
Installing all Cards (CE) List | Install | install All | Remove | iDent >A P1,A, DT310 installed P2,A, none installed P3,A, DT310 installed P3,B, none installed P3,C, none installed P3,D, DT575 installed P3,E, none installed P3,F, none installed P4,A, none installed P4,B, none installed P4,C, none installed P4,D, none installed P4,E, DT579 installed (CE) List | Install | install All | Remove | iDent *> Removing a Card (CE) List | Install | install All | Remove | iDent >R select port, card >P3, A DT310 remov
The default configuration field has been set in the following manner: 1 P1 and P2 (Line 1 and Line 2) Sync: Fcode: Bypass: Mode: Error: CRC4: Alarm: Ts Assign: 2 Line loss FFH Disabled Terminal 10-5 Disabled Line loss No timeslots allocated Sync source Failure recovery mode: Automatic Automatic recovery delay: 1 second Source selection: Freerun 3 Channel alarm events All unassigned Alarm events disabled 4 Circuit assignments No timeslots assigned to channel cards.
9 Management alarm events All unassigned Alarm events disabled 10 Route alarms Route 1 Route 2 Route 3 Route 4 Route 5 Route 6 Route 7 Route 8 11 Stream 1 Stream 2 Stream 3 Stream 4 P3 Circuit A1 P3 Circuit A2 P4 Circuit A1 P4 Circuit A2 External relays All disabled X723-300151 5-39 Issue 2
5.5 Remote Menu 5.5.1 Operation (Non Network Mode) Networking must be disabled in the 'Install' menu for this mode of operation. In this mode the multiplexer may use network management data paths for point to point control of the remote equipment. In the example below the operator has selected 'Remote' to obtain a menu response from a 3400 (id G24) located remotely to the multiplexer.
5.6 Smart Menu Operation The 'Smart' menu option at the root menu will provide the operator with access to any installed smart channel cards. On selection the operator will be prompted for a card slot identity. and control will then be passed to the menu system of the smart channel card installed in that position. The first menu displayed will be the Smart root menu. When at this menu the operator may press the 'ESCape' key to return to the main multiplexer menu.
X723-300151 5-42 Issue 2
6 Fault Reporting & Maintenance Facilities 6.
6.1.1 Fault Logging Modes The operator can display or change the current fault reporting mode by menu selection: 'Off' - faults will be stored in the fault buffer. 'Logging' - faults will be logged to the screen as they occur as well as being stored. 'ASR' (Alarm Service Request)- An audible sound will be emitted from the terminal at one minute intervals as well as the faults being stored.
Inhibit (FA) List | list All | Circuit alarms | Received attention >C (FAC) List | Enable | Inhibit >I port, circuit >P3,B4 List (FA) List | list All | Circuit alarms | Received attention >C (FAC) List | Enable | Inhibit >L P3 circuit B4 alarm inhibited Enable (FA) List | list All | Circuit alarms | Received attention >C (FAC) List | Enable | Inhibit >E port, circuit >P3,B4 The alarm inhibit function derives information from the equipment map, and will warn the operator if an inhibit is attempted on a card
Smart faults may be marked received attention with the 'Smart faults' menu command. (FAR) Faults | Smart faults | p1 | p2 >S select port, card >P3,A P63, 2 RxAt, 6 Smart , 2 AIS 1 P3,A1, , , TS , Time 24,2, 10, 45 P63, 2 RxAt, 6 Smart , 37 Frame slip 2 P3,A2, , , TS , Time 24,2, 10, 51 (FAR) Faults | Smart faults | p1 | p2 *> Port 1 or port 2 Dual LIU faults, which are also Group 6 Smart faults, may be marked 'Received attention' with the p1 or p2 menu commands.
6.1.6 Fault Tables & Alarm Responses No.
No.
No. FAULT RELAYS P MISC GROUP 9 1 Timeslot loop 3 Map mismatch 5 Rx. Atten. local 6 Rx. Atten.
Note 1 Group 5 fault 9 - configuration 1 running. Faults 10 to 22 correspond to configurations 2 to 14 running. One of the configurations will normally be running, and this zero level 'fault' is for information only. Note 2 Group 5 fault 25 - configuration 1 corrupt. Similarly, faults 26 to 38 correspond to configurations 2 to 14. Note 3 LIU faults from a board fitted to P1 will light LED 2, and not LED 3. LIU faults fitted to P2 will light LED 3 and not LED 2.
6.1.7 Statistical Reports Under the fault menu, the option is provided to display the results from the CRC4 checking facility if it has been enabled in the configuration set up (See 5.4.3. 6)), or to display the 'Counts' and 'Duration' of other LIU faults occurring on ports 1 and 2. Ports 3 and 4 do not have this facility (F) Mode | Store | Active | sTats | >T (F) p1 | p2 >1 (FT1) cRc4 | Durations | Counts > i) CRC4 The facility is provided to display or clear the CRC4 information.
Note that on entry to the CRC4 menu that the escape key will be inhibited for a short period. ii) Durations This will give a display of the cumulative duration of faults which have occurred on either port or line. The counter increments in one second steps up to a maximum of 65535 seconds when the store will overflow and not reset. The store may be emptied using the 'Clear' command.
6.2 Maintenance Facilities The maintenance facilities are controlled by menu options as follows:Maintenance Menu M aintenance Current sY nc c O nfig Alarms C ircuit status S mart configs Data tests S et Data S ignalling D isplay Data S ignalling P eak codes Loops p1 p2 Timeslot local self Test Reconfigure A larms R elay set S ystem P rompt ser V ice R x.
6.2.1 Current Status Monitoring (M) Current | Data tests | self Test | Alarms | Version | System | typE >C The current status of the following items may be displayed by selection of the appropriate menu command. Sync Source This command displays the current sync source. (MC) sYnc | cOnfig | Alarms | Circuit status | Smart configs >Y priority 1 free running Configuration This command indicates the channel and management configurations that are currently running.
Circuit Status This menu command requests a port followed by the circuit range, and then displays any timeslot assignments followed by the status port values for the range specified.
6.2.3 Displaying Data, Signalling and Peak Codes Data and Signalling The 'Data' 'Display' commands allow the operator to monitor the data in a timeslot or the signalling data in TS16 associated with a timeslot from any of the incoming streams or ports. Data and signalling will always be displayed in Hexadecimal. (MDD) Data | Signalling | Peak codes >D stream, timeslot >S2,7 70H,***,70H, Note: while timeslot data is changing '***' will be displayed and '**' while signalling data is changing.
Note: Incoming and Local PCM loops reset each other, each cannot therefore be set at the same time. Both incoming and local loops require an additional parameter that specifies the period for which the loop is to be applied. This may be from 1 to 120 seconds, indefinite if 'I' is entered or 10 seconds if no parameter is entered. The positions of all loops are shown in Figure 6-1. Local Loops This commands the Dual LIU to apply a local PCM loop back to the required stream at the G.703 interface.
Timeslot local loop This commands the system controller to loop a selected timeslot back to its source via the cross connect switch. (MD) Set | Display | Loops | Reconfigure >L (MDL) Local | Incoming | Timeslot local | Circuits >T stream, timeslot >P3,1 When applying a timeslot local loop all data sourced from the looped timeslot will be forced to fault codes. For Nx64k circuits, all timeslots must be looped individually.
CHANNEL CARD CIRCUIT LOOP P3 PCM Local PCM Loop Timeslot Loop S1 S3 CROSS CONNECT SWITCH LIU Incoming PCM PCM S2 S4 Loop Set Data Set Signalling P4 Display Data Display Signalling Display Peak Codes Figure 6-1 Position of Loops and Data Test Points Reconfigure The 'Reconfigure' option runs the current configuration again. All loops and data tests will be cleared, and in A/B mode 'path A' will be selected. (MD) Set | Display | Loops | Reconfigure >R 6.2.
Example 2 - Self Test Failed (M) Current | Data tests | self Test | Alarms | Version | System | typE >T are you sure (Yes | No) >Y self test failed If the self test fails, there will be diagnostic information presented to the operator after the self test failed message. This will list the faults and show the total number of items that have failed. An active fault 'Self test fail' will be raised, and it will be necessary to carry out a satisfactory self test to clear it.
6.2.8 Equipment Type and Version Display Equipment Version This command displays the software version information for the system controller. This is presented as the product code followed by the build level. (M) Current | Data tests | self Test | Alarms | Version | System | typE >V Main Card DT981/6 Standby Card DT981/6 (only displayed if fitted) Equipment Type This command displays the equipment type code used for the network management system.
6.3 Network Problems All networks will occasionally show problems. These may be indicated by one or more of the following: a) b) c) d) Alarm relays operating. Alarm indicators lighting. Alarm messages displayed if fault logging is on. Communication problems through the network. Problems can be caused by any one or more of the following: a) b) c) d) e) Power loss at a node. PCM transmission problems. Synchronisation problems. Incorrect equipment configurations. Equipment faults.
The interrelation between the four main fault classes is shown below. System (equipment) faults PCM transmission faults Synchronisation faults Data path faults From this it can be seen that the correct sequence for clearing network problems is: 1. Check and clear all system faults at all nodes in the network. 2. Check and clear all PCM transmission faults in the network.
The self-test routine, which is automatically carried out after a cold startup, may be restarted by use of the Maintenance-self-Test command (6.2.5). WARNING: The node will be isolated from the network during the period of self test PCM Faults PCM loops may be applied to Dual LIUs in ports 1 and 2 by use of the Maintenance - Data tests - Loops - menu (6.2.4). Both Local and Incoming PCM loops may be set to each G.703 line signal.
6.5 NCS Fault Levels Level 1 Faults There are no faults at this level. Level 2 Faults There are no faults at this level. Level 3 Faults External status 2 This indicates the presence of an alarm condition on external status line 2. Level 4 Faults Power in failure This fault indicates that a power fail condition has occurred. Level 5 Faults Event corruption This fault indicates that the timed event store within the node is corrupt.
Config 2 corrupt to config 14 corrupt As config 1 corrupt RT Clock corrupt This fault indicates that the data from the real time clock is corrupt. The most likely causes of this problem are that it has never been correctly configured or the battery is discharged. System restart This fault indicates that the unit has failed to undertake normal software operation. This will cause a restart fault to occur. The self test routine will not be entered after a system restart.
Comms failure This fault is used to indicate that the smart communication link between the system controller and smart channel card has failed. This will mean that none of the configurations running on the smart channel cards can be considered to be valid, and the card should be re-initialised until the fault clears. Line O/P Fail This fault occurs when the Mux detects that there is no output from the specified output on a Dual LIU card.
Level 10 Faults Frame slip Frame slips will occur if there is a problem with the synchronisation of the equipment. The slip is an attempt to re-sync to the Frame alignment pattern. This will result in the omission or repeat of one frame of data. Tslt 16 AIS This fault indicates that the AIS signal, i.e. all 1's has been detected in TS16. MF sync loss This fault indicates that the multiframe synchronisation pattern has not been detected when the line is set to CAS mode.
PSU B Fail This indicates that power supply unit 'B' has failed, when 'fitted' in the 'mOde-Install' menu. PSU tolerance This fault indicates that one of the internal power supply rails is outside the specified tolerance of ± 4%. Slip This fault is associated with a channel card and is present when a data circuit slip has occurred on the card. It is usually caused by incorrect clocking. Local loop This fault indicates that a local PCM loop has been set on the line.
Sync priority 3 This fault indicates that the third synchronisation source has failed. Sync priority 4 This fault indicates that the fourth synchronisation source has failed. No Sync source This fault indicates that all the clock selections given in the channel configuration have failed and the system is now running priority 5 source (free run). Level 15 Faults Low err rate This fault will indicate that an error rate greater than the assigned threshold has been detected.
Module 1 Status 2 This fault indicates that module 1 has raised status line 2. For optical interface modules this is optical line signal loss. Module 1 Status 3 This fault indicates that module 1 has raised status line 3. Module 1 Status 4 This fault indicates that module 1 has raised status line 4. Module 2 Status 1 to Module 2, 3 and 4. Faults are the same as module 1 for modules 2, 3 and 4.
Rx. Atten. Local The currently active faults have had their relay driving actions inhibited by the use of the local receive attention command. This command will originate from the operator menu under the 'faults active' section. Rx. Atten. Network The currently active faults have had their relay driving actions (when enabled on the node) inhibited by the use of the network receive attention command. This command will originate from the network control unit.
7 Channel Interface Cards 7.1 General Information A copy of the manual supplied with each channel card type should be inserted in this chapter using the dividers provided. Channel Interface Cards may be fitted into any position as indicated in this manual. The channel card manual describes the facilities available on each interface along with configuration and connection detail. All channels cards may be inserted or removed from the 3200 with power applied to the chassis without damage.
A unique I.D. code for the card is contained in the status port information which is used by the system controller in the 'Equipment map' to display which type of card is fitted in each position. Data channel cards, when set for DTE operation, can provide an 8kHz clock signal derived from the data/clock input at the interface. This can be selected by links or switches to drive the 8k1 or 8k2 signals for use as the source of system synchronisation.
7.2 Approvals The following Interface cards, when fitted to a 3200 multiplexer chassis, have approval for use with 'Private Circuits' Details of the approvals are given in the relevant installation and operation manual for each card. Quad 2/4 Wire E&M Channel Card Quad 4 Wire AC Signalling Card Eight Channel ADPCM Card Dual V.11 Universal Data Card Dual 2048k Line Interface Card G.
DC5/Loop Disconnect Signalling Converter Card DTE80 & 81 1544k Line Interface Card DTE74 & 75 Optical 2 Mbit/s G.
8 3000 Power Supply Equipment 8.1 General Description The 3000 power supply unit (PSU) may be used to power two independent, co-located 3200 equipments. The 3RU shelf may be equipped with up to 4 plug-in PSUs depending on the chassis options supplied. Available combinations include: Single Power Supply (1 PSU), Dual Power Supply (2 independent PSUs), Single Redundant Power Supply (2 PSUs in parallel) or Dual Redundant Power Supply (2 independent sets of paralleled PSUs).
The front of the unit is covered by a single front panel. All connections are made to the rear of the chassis for power input, power output and alarms. A rear view of the chassis is shown in Figure 8-2.
8.3 Specifications EMC Complies with: BS6527 1988 Class A EN55022, Emissions IEC801 part 3 level 3, narrow-band susceptibility British Telecom RC5000M open issue 11.1.9, broad-band susceptibility IEC801 part 2 level 3, ESD Power Input Voltage: Connections: DC power: 187-264VAC, 47 to 63Hz. Fused at 3 amps 99-132VAC, 47 to 63Hz. Fused at 3 amps -38 to -60VDC, Fused at 8 amps. (Max -57VDC if a DT579 is fitted in the multiplexer) For special applications a nominal 24VDC (18-32V) version can be supplied.
Alarms Power Good: 0V or open circuit connection. Presence of 0V represents a power good condition. 0V signal will be within the range ± 0.3V with respect to the local earth, and capable of sinking 10mA max. Connection: 9-way D-type socket. Mechanical 19 inch. 3RU rack mounting chassis with one piece front cover. Width: Height: Depth: 485mm 133mm 382mm Weight PSU: Chassis: 2kg. each 3.5kg.
Under typical conditions, e.g. ambient temperature less than 25oC, and with the powered equipment half loaded with cards, fans will not be required. Advice on any particular installation can be gained by contacting your supplier. The initial fitting of a fan requires the unit to be powered down. It is recommended that a 1U (1.75") space is left above the power unit to aid ventilation. The power unit shelf may be mounted either above or below the powered equipment.
Note: Ensure the voltage select switch is set to the correct voltage before installation. Input Voltage: Frequency: Current: Fuse Type: 99 to 132 or 187 to 264 volts AC 47 to 63Hz 2.5A (115V) or 1.3A (240V) maximum. 3 amps quick blow (F), 20 x 5mm The fuse is mounted in the PSU front panel. An earth connection must be made to the mains connector. A two way terminal block on the AC Power Input Panel allows for connection of an auxiliary -48V DC supply.
8.5 Commissioning Power-up procedure: Ensure that the correct PSU type is fitted to the chassis. Check that AC PSUs are set to the correct input voltage. Always ensure a PSU is switched off before plugging it into a live chassis. After switch on, the 'Power Good' LED on each PSU front panel should be illuminated. Alarm Indications An alarm output is provided from each PSU.
8.6 Maintenance PSU Replacement A PSU is faulty if the 'Power Good' LED is not illuminated when switched on. A PSU must be switched off before it is plugged into or unplugged from a live system. If a PSU is switched off it should not be switched back on again for a period of 30 seconds. The internal protection circuit causing a shut down due to overload or other cause may take a considerable time to reset. If this occurs leave the PSU switched off for an extended period (e.g.
A Patchfield Electrical Diagrams A.1 General Information Patchfields for the system controller and Dual LIU Cards are preprogrammed and held in PAL devices. The patchfield devices are allocated a DT number which is marked on the device. The following electrical equivalent diagrams refer to patchfields DT990/C for the System Controller and DT995D for the Dual LIU Card. Each patchfield can hold up to 8 patchfields, however only 1 to 7 should be selected by the operator.
System Controller Electrical Patchfield Diagrams DT990/C Patchfield No. 1 UAR T “A” UAR T “B” COM 1 M1 COM 3 M3 COM 4 R S 232 UAR T “C” Patchfield No.
Patchfield No. 3 UAR T “A” UAR T “B ” M1 M2 M3 M4 COM 4 R S 232 UAR T “C” Patchfield No.
Patchfield No. 5 UAR T “A” UAR T “B ” COM 1 M1 COM 2 COM 3 M3 COM 4 R S 232 UAR T “C” Patchfield No.
Patchfield No.
Dual LIU Patchfield DT995D Electrical Diagrams 1 2 L I N E 1 B4 & M1 M2 L I N E 2 M3 M4 & B5 M2 M3 & B6 B7 L I N E 1 B4 M1 & B7 L I N E 2 & & & M3 B4 B5 B6 M4 & B7 L I N E 2 6 & B5 B6 B7 M2 B4 B5 B6 M4 B6 L I N E 1 4 B4 & & B5 & 5 M3 & & M2 3 & L I N E 2 4 B4 M1 B7 L I N E 1 2 3 M4 B6 & & 1 M1 B5 & B7 B4 L I N E 1 M1 & B5 & B6 B7 M2 L I N E 2 B4 M3 & B5 M4 B6 B7 & 4 L I N E 1 L I N E 2 6 7 M1 L I N E 1 & M2 L I N E 2 M
