Click here to go to linked TOC TM Access Bank I T1 Voice Multiplexer Installation and Users Manual Part Number 002-0005 Version 1.
Access Bank I T1 Voice Multiplexer Installation and Users Manual V1.
© Copyright 1995 Carrier Access Corporation. All rights reserved. Specifications subject to change. The information presented in this manual is subject to change without notice and does not represent a commitment on the part of Carrier Access Corporation. The hardware and software described herein are furnished under a license or non-disclosure agreement. The hardware, software and manual may be used or copied only in accordance with the terms of this agreement.
INSTALLATION ................................................................................................................................ 1-1 UNPACKING ....................................................................................................................................... 1-1 SITE SELECTION ................................................................................................................................. 1-1 MECHANICAL INSTALLATION ...........................................
ABOUT THIS SECTION ......................................................................................................................... 4-1 4-WIRE E&M/TO VOICE CARD .......................................................................................................... 4-1 Functional Description.................................................................................................................. 4-1 Physical Description .....................................................................
EXAMPLE FRONT PANEL DIP SWITCH SETTINGS .................................................................................. 6-8 LEDS FOR TR-08 OPERATION ............................................................................................................. 6-9 Channel Attenuation Options....................................................................................................... 6-10 TR-08 CONVERSION CABLE .......................................................................................
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FCC REQUIREMENTS Federal Communication Commission Part 68 Exhibit J1 This equipment complies with Part 68 of the FCC rules. The label attached to the Carrier Access Access Bank I contains the FCC registration number. You must provide the following information to the telephone company, if they request it: FCC Registration Number: 2Z6USA-22437-DD-N Ringer Equivalence: 0.
Refer to the installation chapter in this manual for a safe and proper installation procedure. All wiring external to this equipment should follow the current provision of the National Electrical Code. National Electrical Code Requirements The Access Bank I channel bank is CCL certified and is in compliance with ANSI/UL Std. 1459, Second Edition. The CCL certification number for the product safety listing of the Access Bank I is C86-0303. Industry Canada Requirements CP - 01, Part I, Section 10.
WARRANTY Carrier Access Corporation warrants to BUYER that PRODUCTS are free from substantial defect in material and workmanship under normal use given proper installation and maintenance for the period of two years from the date of shipment by CAC. BUYER will promptly notify CAC of any defect in the PRODUCT. CAC or its agent will have the right to inspect the PRODUCT or workmanship on BUYER'S or BUYER'S customer's premises.
Chapter 1 Installation INSTALLATION CAUTION: • Never install telephone wiring during a lightning storm. • Never install telephone jacks in wet locations unless the jack is specifically designed for wet locations. • Never touch uninsulated telephone wires or terminals unless the telephone line has been disconnected at the network interface. • Use caution when installing or modifying telephone lines.
Chapter 1 Installation For wall mounting, allow at least 2 inches clear space on the sides, above and below for adequate air flow. Allow at least 6 inches from the control panel to the wall for cable clearance and access to switches. The site should provide a stable environment. The operating area should be clean and free from extremes of temperature, humidity, shock, and vibration. Relative humidity should stay between 0 and 95%. Do not operate the unit at an altitude greater than 10,000 feet.
Chapter 1 Installation ELECTRICAL INSTALLATION Figure 2.1 Access Bank Control Panel Figure 2.1 shows the Control Panel of the Access BankTM. The connector pin definitions of the Power Connector, T1-Line and Tip and Ring connector are defined in Table 2.2, Table 2.3 and Table 2.4, respectively. Self Test Normal Normal Network Loopback Normal Normal Alarm Cutoff Test Status T1 Framing Input Monitor T1 NETWORK (Line) connection port.
Chapter 1 Installation Table 2.2 Power Connector Pin Number 1 2 3 -48 V DC Return Signal -42 to -58Vdc or Carrier Access AB115POWER converter cube DC Return, to power supply + terminal Telco or Safety (Green Wire) Ground Telco or Safety Ground The 3-position POWER connector is for DC power input only. Power Installation The installation site should have a 115V AC power receptacle for the AC/DC power converter, or a 48V DC power supply with a minimum of 1 A spare capacity.
Chapter 1 Installation Grounding The separate Ground connection on the Access Bank power input may be connected to one of three locations on the customer premises. Proper grounding of the Access Bank is very important for safety, proper signaling with an attached PBX, and protection of Access Bank electronics against lightning and a.c. power transients. A ground wire size of at least 18 AWG must be used.
Chapter 1 Installation 7 8 Receive Ground Transmit Ground The maximum cable length for T1 Network (DS1-1) connection is suggested as follows. Reliable T1 cabling distances depend on whether shielded 22 AWG T1 cable (ABAM 600) or unshielded 24 AWG telephone twisted pair cables are used. ABAM 600 T1 Cable T1 Network Port (CSU) 6000 feet ABAM 600 Cable Specifications: Nominal Impedance: 100 ohms +/- 5% at 772 kHz. Insertion Loss: Better than 7 dB per 1000 feet at 1.544 MHz.
Chapter 1 Installation CSU to Access Bank DA-15P(male) to RJ48C P01519-XX where XX is length in feet in multiples of 10 feet Tip and Ring Cabling The access Bank has a 25-pair female telephony connector (labeled tip & ring) located as shown in fig. 2.1. To connect to it, use a 25 pair cable with a Standard "D" Style 50 Pin Telephone Wiring Connector with RJ-21X wiring jack (punch down block with 25 pair modular female connector in the side.
Chapter 1 Installation Set-up and Configuration Settings T1 Control Switch Diagnostic Switches (See Chapter 4): Self Test Switch Self Test Normal Manual Network Loopback Switch Normal Network Loopback This switch is for future use Normal Alarm Cut-off Switch Normal Alarm Cutoff Test Status T1 Framing Input Monitor Output Monitor T1 -48Vdc Return Ground Tip & Ring 1-8
Chapter 1 Installation Hardware Configuration Setting All configurations are set using easily accessible switches. While most switches are external to the box, the individual channel gain switches are located on each channel card. T1 Control Switches: 10 Position DIP Switch Block On Front Panel Factory Default setting is all switches off, which is the most popular application. Details are listed below the table.
Chapter 1 Installation is required at their demarcation network interface (NI). A T1 level from the Access BankTM which is too high for the engineered facility can result in bipolar violations seen by the carrier. Too low a level can result in loss of signal seen by the carrier. Note that the LBO option does not effect the Access BankTM T1 Line receive input automatic gain sensitivity, which is 0 to -30 dBsx.
Chapter 1 Installation Access Bank T1 Network Line can be configured as AMI (Alternate Mark Inversion or Zero Code Substitution) or B8ZS (Bipolar 8 Zero Substitution) line code format. Line coding options determine the technique used to handle more than 7 zeros in a row. B8ZS line coding substitutes a Bipolar Violation after 7 zeros, allowing use of 64 Kbps of each DS0 channel. AMI requires that Bit 8 of each DS0 channel be "jammed" to a one, yielding only 7 of 8 bits or 56 Kbps of each DS0 for user data.
Chapter 1 Installation FXS Signaling Options - FXS Signaling Switch Signaling Options are set for all 12 channels of the FXS-12 with one 4-position DIP switch to determine options for A/B signaling conversion. Signaling support for wide variety of T1accessed voice services is provided by the Access Bank. Examples of dedicated access services supported are: AT&T Megacom, Nynex Flexpath, U.S.
Chapter 1 Installation TP Busy/Idle Switch Trunk Processing can be selected as Idle or Busy. Trunk Processing occurs when the T1 line is in an alarm (not operational) state. An Idle (off) selection of this switch will cause all 12 FXS Tip Ground Relays to be open during a T1 alarm or reset period. A Busy (on) selection will cause all 12 FXS Tip Ground Relays to be closed during a T1 alarm or reset period.
Chapter 1 Installation which are equipped to detect loss of loop current on their line interfaces. This loss of loop current informs the equipment to hang up. For use with AT&T MEGACOMR, NYNEX Flexpath and other Carrier's E&M Services Switch Option A On Switch Option B Off Switch Option C Off Wink-Start to Ground-Start Conversion (AT&T Megacom, Flexpath, etc.) Access Bank FXS interfaces can convert from E&M wink-start to a standard Ground-Start interface to a PBX phone system.
Chapter 1 Installation immediately after incoming seizure. The 200 ms outgoing wink "proceed-to-send" signal is not sent to the T1 network until 800 ms after FXS ringing voltage has been tripped (answered). Thus the voice mail or PBX DTMF or MF register has at least 1 second to be attached to the line after closing the loop. The network will then proceed to automatically send 4 to 10 ANI or DNIS digits.
Chapter 1 Installation 4 5 6 7 (MegacomR) and Calling Party Disconnect (1 &2) Also used as Private Line Automatic Ringdown (PLARD) Off Off On E&M immediate start to Ground Start Conversion with ringback to T1 (MegacomR)(1) On Off On Wink Start ANI/DNIS to Loop Start Conversion with 800 ms Wink Delay and Calling Party Disconnect (1,2,3) Off On On Wink Start ANI/DNIS to Ground Start conversion with 800 ms Wink Delay (1,3) On On On Custom Signaling Options: Please contact Carrier Access Corporation.
Chapter 1 Installation Transmit loss is nominally 0 dB with switches 4 thru 6 on.
Chapter 2 Maintenance Test 24 Test 23 Test 22 Test 21 MAINTENANCE Channel 24 Channel 23 Channel 22 Channel 21 Note: Electrostatic Discharge (ESD) Safety Procedures MUST be followed when handling all circuit cards. Test 20 Test 19 Test 18 Test 17 Channel 20 Channel 19 Channel 18 Channel 17 Test 16 Test 15 Test 14 Test 13 REPLACE CHANNEL/LINE CARD - HOT SWAP Channel 16 Channel 15 Channel 14 Channel 13 To replace a channel line card while the unit is "hot": 1.
Chapter 2 Maintenance REPLACING THE LIU CARD 1. Turn off the power and remove the power connector, the T1 network cable and the 25 pair standard telephone cable (and Bantam jacks if plugged in). 2. Unscrew the thumb screws at the back of the Access Bank and remove the back cover. 3. Unscrew the thumb screw at the front of the Access Bank. This holds the "cookie tray" in the chassis that contains the LIU card. 4. Slide the cookie tray out of the chassis.
Chapter 2 Maintenance BUSY-OUT INDIVIDUAL CHANNELS Test 24 Test 23 Test 22 Test 21 Channel 24 Test/Busy-out Switch for Channels 21-24 Channel 23 Channel 22 Channel 21 Test 20 Test 19 Test 18 Test 17 Channel 20 Test/Busy-out Switch for Channels 17-20 The arrows mark the individual Channel Test/Busy-out Switches.
Chapter 2 Maintenance 2-4
Chapter 3 Testing & Diagnostics TESTING & DIAGNOSTICS DIAGNOSTIC SWITCHES Diagnostic Switches There are 4 slide switches on the Access Bank front panel to enable test functions, along with a test tone switch and T1 monitor jacks. Test Tone Switch #7 Self Test Switch Self Test Switch Self Test Normal Note: The LIU card and at least one channel card must be in place for a valid self test. (Please allow at least 16 seconds for self test results.
Chapter 3 Testing & Diagnostics LIU has failed, and should be replaced. (Note: Test is valid only with at least one channel card in place.) Off: When the Self Test switch is in the Normal position, the Test LED is turned off and the Access Bank is returned to normal operation. Note: The Self Test can be turned on and off to reset the Access Bank.
Chapter 3 Testing & Diagnostics NORMAL / REMOTE SWITCH (AB-24) This switch, in the third position down on the Access Bank front panel, is used for selecting usage of the Access Bank Remote Monitoring board. This switch should remain in the Normal position when the usage of the ABRM is not desired, or when the channel bank is not equipped with the ABRM. When the switch is in the Remote position, you can utilize the remote dial-up capability of the ABRM.
Chapter 3 Testing & Diagnostics Yellow: The Access Bank is in a Trunk Processing state (all voice channels are suspended) due to the T1 signal received from the network being in one of the following alarm conditions: Loss of Signal, AIS (unframed all ones received), or Yellow Alarm received.
Chapter 3 Testing & Diagnostics jack should be set in the bridged (high impedance) mode to avoid loading-down the T1 signal coming from the Access Bank. The Input Monitor jack connects directly across the DS1 signal received by the Access Bank from the T1 line. This allows in-service monitoring of the signal being received from the network. The receive pair at the Access Bank RJ-48C (T1 Line modular jack) remains connected at pins 1 and 2 to the line.
Chapter 3 Testing & Diagnostics FXS Diagnostic Functions Channel Status LEDs Bi-color Red/Green Signaling Status LEDs indicate both the near-end and far-end seizure conditions by 12 visual indications on the back of each FXS-12 card as follows: Test Test Test Test 24 23 22 21 Channel 24 Channel 23 Channel 22 Channel 21 Green Red Incoming Seizure (Tip Ground, Incoming A bit set) Green is the normal idle status for LoopStart signaling.
Chapter 3 Testing & Diagnostics Channel Test/Busy Switches Test 24 Test 23 Test 22 Test 21 Channel 24 Test/Busy-out Switch for Channels 21-24 Channel 23 Channel 22 Channel 21 Test 20 Test 19 Test 18 Test 17 Test/Busy-out Switch for Channels 17-20 Channel 20 Normal setting for the channel busy switches is in the off position, or toward the right. 1. The channel busy switch performs three functions on an individual channel.
Chapter 3 Testing & Diagnostics TROUBLESHOOTING AN ACCESS BANK Problem Indication Corrective Action No LED's Lit on the Access Bank. Status LED off. The Access Bank has no power. 1. Check all Power connections. 2. The AB-115 Power converter cube may have tripped its circuit breaker. Reset it. 4. A power source greater than -70 Vdc is or has been connected to the Access Bank. There are no power fuses internal to the Access Bank.
Chapter 3 Testing & Diagnostics The Test LED is Yellow The Access Bank is in Network Loopback - sending the received T1 signal back toward the line. This may be due to either an in-band five-bit loopback code of 10000 received from the T1 line, or the Network Loopback Switch being set to Network Loopback at the front of the Access Bank. 1. Be sure the Network Loopback switch is set to Normal. The Test LED Remains RED for more than 16 seconds after Self Test is started. T1 Line LED is Red 2.
Chapter 3 Testing & Diagnostics Framing LED is Yellow Yellow Alarm Received from Network. This may indicate a carrier Out of Frame condition or if the Access Bank is on a point-to-point span, this may indicate a far end equipment failure. 1. Check the Access Bank connection to the T1 line at the unit and at the demarcation. The outbound T1 signal may not be connected. 2. Check the Access Bank framing switch (#4) on the T1 control switch) to be sure it is set the same as the far end or the network.
Chapter 3 Testing & Diagnostics 3-11
Chapter 4 4-Wire E&M/TO Configuration 4-WIRE E&M/TO CONFIGURATION ABOUT THIS SECTION This section describes how to configure the 4-wire E&M/Transmission Only (E&M/TO) 12-channel voice card for connecting the Access Bank I to T1 private line services that support E&M signaling types I, II, IV and V. Also, cable information and specifications are provided at the end of this section.
Chapter 4 4-Wire E&M/TO Configuration applications. Refer to Figure 5-1 and Figure 5-2 below for pictorial representations of these typical applications. Up to 24 E&M or TO Interfaces in 12 Channel Increments Public or Private Network T1 Network Connection Stations 4-Wire E&M Normal Mode Analog PBX 4-Wire E&M TO Mode Access Bank I Dedicated Transmission-Only Modem for Data Figure 5-1.
Chapter 4 4-Wire E&M/TO Configuration Carrier Network PBX T1 T1 ABII 4 Wire E&M Tandem Mode ABII 4 Wire E&M Tandem Mode Radio or Microwave Radio or Microwave Transceiver Radio or Microwave Transceiver Figure 5-2. Tandem Mode E&M Access to Leased Lines or Carriers E&M SIGNALING CONVENTIONS According E&M signaling conventions, Switching Equipment always originates signaling on the M-lead (the “mouth” sending toward the transmission line).
Chapter 4 4-Wire E&M/TO Configuration Switching Equipment Detector is the E-lead function Driver is the M-lead function M M Lead Detector -48V -48V E Lead Detector E E&M Type 1 M M Lead Detector SB -48V -48V E Lead Detector E SG E&M Type 2 M M Lead Detector -48V M Lead Detector -48V SB -48V E Lead Detector E SG E&M Type 4 M -48V E Lead Detector E E&M Type 5 Tandem Mode (Originating) (Switching Equipment) Normal Mode (Terminating) (Channel Equipment) 4-4
Chapter 4 4-Wire E&M/TO Configuration Figure 5-3. E&M Signaling Types 1, 2, 4, and 5 PROGRAMMING E&M SIGNALING TYPES Jumper Switch Settings E&M signaling types I, II, IV and V (see Figure 5-3) are configured by jumpers J1, J2 and J3 located on each channel. Because the signaling types are configured on an individual channel basis, different E&M types may be mixed on the same card.
Chapter 4 4-Wire E&M/TO Configuration -48V GND Relay GND DRR DETR J3 11 DRV' 10 DRV 9 DRV' 8 -48V J2 6 7 5 GND GND -48V J1 4 3 2 DETC DRV' 1 DETC Figure 5-4. Jumper Switch Configuration Note: The jumpers do not change the actual interface pin assignments for the E&M signaling line connector. The detector and driver functions always stay on the same pinouts. DETECTOR CONFIGURATION Jumper 1 is used to select options for configuring E&M signaling types I, II, IV and V.
Chapter 4 4-Wire E&M/TO Configuration Table 5-3. E&M T1 Signaling Detector Off On XMT Signaling Bits A B 0 0 1 1 RCV Signaling Bits A B 0 1 * * Driver On-Hook Off-Hook *Don’t care (0 or 1) NORMAL AND TANDEM CABLES Individual E&M/TO voice cards require the purchase of the Normal mode or Tandem mode cables listed below in Table 5-4. The type of cable used with the signaling line connector determines whether all twelve channels of that card operate only in that mode.
Chapter 4 4-Wire E&M/TO Configuration C-Type 96 Pin DIN Connector 50 Conductor, Solid Strand, 24AWG A B 50-Pin AMP Champ Connectors, Male Figure 5-5. Cable for Normal or Tandem Modes CONFIGURING SIGNALING TYPES AND TRUNK PROCESSING The 4-wire E&M/TO card is also equipped with a 4-position DIP switch for selecting between E&M Signaling on Transmission Only (TO) (TO = no E&M Signaling), and setting busy or idle during trunk processing.
Chapter 4 4-Wire E&M/TO Configuration SETTING TRANSMIT AND RECEIVE GAIN The transmit (analog-to-digital) and the receive (digital-to-analog) gain for each voice channel can be set independently using twelve 10-position DIP switches on top of the 4-wire E&M card circuit board. Each analog channel uses a bank of ten DIP switches, with five for transmit and five for receive.
Chapter 4 4-Wire E&M/TO Configuration channel 12 is in the bottom right corner. The meaning of the states of these 12 LEDs are summarized below in Table 5-6. Table 5-6. E&M Channel Status LEDs LED State Off Green Red Yellow Meaning Idle state Analog side is Off Hook Digital side is Off Hook Analog and Digital sides are both Off Hook E&M NORMAL MODE CABLE DESCRIPTION E&M normal mode cable, 96-pin DIN female to two Telco 50-pin males.
Chapter 4 4-Wire E&M/TO Configuration Length 10 feet 4-11
Chapter 4 4-Wire E&M/TO Configuration ASSEMBLY INSTRUCTIONS See below for wiring information. The cable must exit the DIN connector housing from the right side (when viewed from the top). During assembly, a 1.5” piece of red heat shrinkable tubing is to be shrunk around each cable where it enters the Telco connector in order to distinguish this cable from other CAC cables. Physical Appearance C-Type 96 Pin DIN Connector Housing must be side entry type. Cable enters from right side (when viewed from top).
Chapter 4 4-Wire E&M/TO Configuration P/N 005-0004: Cable #2 Cable Connector Pinouts for E&M Interface RJ2HX Punchdown Block E&M Type I,II,IV,V Normal Mode Note:Telco Pinouts 1 & 26, 2 & 27, 3 & 28 etc.
Chapter 4 4-Wire E&M/TO Configuration E&M TANDEM MODE CABLE DESCRIPTION E&M tandem mode cable, 96-pin DIN female to two Telco 50-pin males. Cable Type: Voice grade telephone cable 25 twisted pairs of 24 AWG seven-strand copper. Outer diameter 0.34” Two per assembly Common Connector: Female 96-pin DIN C-type connector (AMP 166873-5).
Chapter 4 4-Wire E&M/TO Configuration ASSEMBLY INSTRUCTIONS See attached sheet for wiring information. The cable must exit the DIN connector housing from the right side (when viewed from the top). During assembly, a 1.5” piece of blue heat shrinkable tubing is to be shrunk around each cable where it enters the Telco connector in order distinguish this cable from other CAC cables. Physical Appearance C-Type 96 Pin DIN Connector Housing must be side entry type.
Chapter 4 4-Wire E&M/TO Configuration P/N 005-005: Cable #2 Cable Connector Pinoutsfor E&M Interface RJ2HX Punchdown Block E&M Type I,II,IV,V Tandem Mode Note:Telco Pinouts 1 & 26, 2 & 27, 3 & 28 etc.
Chapter 5 12-Channel FXO & Dial Pulse Termination 12 CHANNEL FXO & DIAL PULSE TERMINATION CARD DESCRIPTION The FXO/DPT 12-channel analog card is an “office end” telephone line voice card designed specifically as an interface for Carrier Access Corporation’s family of Access Bank T1 Voice and Data Multiplexers, which are FCC-approved digital Channel Banks and Channel Service Unit/ Data Service Units (CSU /DSUs) for attachment of customer premise telecommunications equipment to public network T1 (DS1) servi
Chapter 5 12-Channel FXO & Dial Pulse Termination Table 6-1: Termination Options and Switch Settings for the FXO/DPT Trunk Signaling FXO Ground Start FXO Loop Start DPT 4-Position DIP Switch per Card 0000 0000 1000 Slide Switch per Channel GS LS LS FOREIGN EXCHANGE OFFICE (FXO) TERMINATION Incoming T1 FXO CO FXS* PBX Outgoing Figure 6-1: FXO Operation The FXO provides private branch exchange (PBX) office end connectivity to public network T1 lines.
Chapter 5 12-Channel FXO & Dial Pulse Termination DIAL PULSE TERMINATION (DPT) TERMINATION Direct Inward Dial (DID) DPO* CO T1 DPT * Use CAC’s Battery Reversal FXS/DPO 12 Channel Analog Card Calling Party PBX Called Party’s Direct Extension Figure 6-4: DPT Operation In DPT mode, the FXO/DPT offers near end termination for one-way Direct Inward Dial (DID). Two-way DID is provided by CAC’s 4 wire E&M interface.
Chapter 5 12-Channel FXO & Dial Pulse Termination Switch Position Switch Setting ON OFF 4 5 6 0 -2 0 -3 0 -4 The loss introduced by each switch is additive. Therefore, it is possible to select the total loss in dB between 0 and 9dB for both the transmit and receive directions by properly setting the switches on each channel.
Chapter 6 TR-08 Option TR-08 OPTION TR- 08 DESCRIPTION Bellcore’s Technical Reference TR-TSY-000008, titled “Digital Interface Between the SLC96 Digital Loop Carrier System and a Local Digital Switch,” describes a Subscriber Loop Carrier (SLC) system. It provides for up to 96 telephone connections to be deployed over 3 to 5 T1 lines running from a Local Digital Switch (LDS) to a Remote Terminal (RT).
Chapter 6 TR-08 Option provisions single shelf groups (designated as either shelf A, B, C, or D) using a single, nonprotected T1 line (designated as either Link A, B, C, or D, respectively) through programmable assignment from the serving Central Office (CO) switch. See Figure 7-1 below for a generic TR08 implementation using the TR-08 Access Bank Is as Remote Terminals (RTs).
Chapter 6 TR-08 Option ♦ FXS-ID Loop Start and Ground Start channel units with CLASS service support, including Distinctive Ringing and Caller ID (5ESS only) ♦ Battery Reversal FXS LS with CLASS service support or Dial Pulse Origination (DPO) (5ESS only) ♦ FXO LS and GS channel units (5ESS only) ♦ 4-Wire E&M Types I, II, IV, and V (5ESS only) ♦ Dial Pulse Termination (DPT) Wink Start, Immediate Start, or 2 Wire, one-way Direct Inward Dial (DID--5ESS only) • “US Grade A” telephone line quality: ♦ Three M
Chapter 6 TR-08 Option LUCENT 5ESS DEPLOYMENT Lucent 5ESS CO switches provide the option to provision all TR-08 units as the standard A, B, C, and D shelves, or as all shelves being assigned as an A shelf. This is an advantage of this switch under TR-08 operation. By setting all shelves to the A setting, alarm reporting to and from the LDS is available on each link to each connected RT.
Chapter 6 TR-08 Option NORTEL DMS 500 DEPLOYMENT Nortel DMS 500 CO switches do not provide the option to set all TR-08 units as A shelves (as with the Lucent 5ESS), but must use the standard A, B, C, and D shelf assignments. This implies alarm reporting to and from the LDS is handled only over the A link to the A shelf RT. For four shelf deployments, always use the shelf A setting on the RT connected to the A link, and the shelf B/C/D setting for units connected on their respective B, C, and D links.
Chapter 6 TR-08 Option CONFIGURATION SWITCHES FOR TR-08 OPERATION Since the TR-08 option on the Access Bank I effects the operation of the Line Interface Unit (LIU), the interpretation of some of the configuration switches have changed. Front Panel DIP Switches Note for front panel DIP switches, the On position is towards the silk-screened top of the Access Bank I chassis. DIP Switches 4, 8, and 9 are CHANGED from Access Bank I D4/ESF Operation 1 (LBO -7.
Chapter 6 TR-08 Option ON T1 Framing Set for TR-08 A Shelf 1 2 3 4 5 6 7 8 9 10 ON T1 Framing Set for TR-08 B/C/D Shelf 1 2 3 4 5 6 7 8 9 10 Figure 7-5: Front Panel T1 Framing Settings for TR-08 Operation Switch 5: T1 Line Coding—On is Shelf B8ZS, Off is AMI AMI or B8ZS T1 line coding can be accommodated under the TR-08 protocol and is at the customers discretion.
Chapter 6 TR-08 Option Switch 10: Not Used EXAMPLE FRONT PANEL DIP SWITCH SETTINGS Figure 7-7 below shows two example front panel DIP switch settings for reference. ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 T1 line buildout set for -7.
Chapter 6 TR-08 Option LEDS FOR TR-08 OPERATION The function of the front panel Test, Status and T1 LEDs remains unchanged from D4 or ESF operation.
Chapter 6 TR-08 Option Channel Attenuation Options As with normal FXS loop start or ground start interfaces on the Access Bank I, each channel on the SPOTS 12 Channel Analog Card can be individually configured to attenuate the audio signal in both the transmit and receive directions. The level of loss is selected via a 6-position DIP switch for each channel (12 switches per card), and is measured in decibels (dB). Note that a 3dB loss (-3dB) implies the average power is reduced by 50%.
Chapter 6 TR-08 Option TR-08 CONVERSION CABLE DESCRIPTION TR-08 Conversion Cable, four feet long, Telco 50-pin Male to Telco 50-pin Female Cable Type: Voice grade telephone cable IBM Gray PVC Jacket 25 twisted pairs of 22 or 24 AWG solid or 7-strand copper Outer diameter less than 0.
Chapter 6 TR-08 Option Access Bank I with TR-08 Option A 50-Pin AMP Champ Connectors, male side in housing. 50-Pin AMP Champ Connectors, female side in housing. 50 Conductor, Solid Strand, 22 to 24 AWG Approx 4 Ft.
Chapter 6 TR-08 Option 15 16 17 18 19 20 21 22 23 24 25 15 40 16 41 17 42 18 43 19 44 20 45 21 46 22 47 23 48 24 49 25 50 Slate/Black Black/Slate Blue/Yellow Yellow/Blue Orange/Yellow Yellow/Orange Green/Yellow Yellow/Green Brown/Yellow Yellow/Brown Slate/Yellow Yellow/Slate Blue/Violet Violet/Blue Orange/Violet Violet/Orange Green/Violet Violet/Green Brown/Violet Violet/Brown Slate/Violet Violet/Slate Ring Tip Ring Tip Ring Tip Ring Tip Ring Tip Ring Tip Ring Tip Ring Tip Ring Tip Ring Tip Ring Tip 6
Chapter 6 TR-08 Option CHANNEL SINGLE PARTY UNIVERSAL VOICE GRADE BITS SENT TO THE LDS CUSTOMER STATE BITS SENT TO THE RT CHANNEL STATE A B A B ON-HOOK 0 0 0 1 OFF-HOOK 1 0 1 0 FORWARD DISCONNECT UNEQUIPPED 1 1 1 1 IDLE (NORMAL BATTERY) 1 1/0 CHANNEL TEST -R RINGING REVERSE BATTERY 1/0 1/0 0 GROUND START ON-HOOK 0 0 0 RING-GROUND 0 1 0 1 CHANNEL TEST OFF-HOOK 1 0 1 1/0 -R RINGING UNEQUIPPED 1 1 0 1/0 IDLE (NORMAL BATTERY) 1/0 1/0 REVERSE BATTERY T
Chapter 7 Battery Reversal FXS/DPO BATTERY REVERSAL FXS/DPO CONFIGURATION ABOUT THIS SECTION This section describes how to configure the Access Bank I Battery Reversal Foreign Exchange Station and Dial Pulse Origination (BRFXS/DPO) 12-channel voice card for connection to T1 public network services and provides instructions for: • Setting Transmit and Receive Levels • Setting the FXS with battery reversal and DPO terminations • Performing Voice Channel Monitoring and Testing Battery Reversal FXS/DPO
Chapter 7 Battery Reversal FXS/DPO OVERVIEW OF OPERATION The reversible-battery FXS channel card is designed to provide twelve 2-wire analog interfaces to the digital T1 (DS1) line. Currently, the analog loops (also called CPE loops in this document) must always be loop-start. One of the main features of the analog interface is that the polarity of the battery feed towards the customer-premise equipment (CPE) can be reversed in response to the signaling bits coming from the T1 line.
Chapter 7 Battery Reversal FXS/DPO Direct Inward Dial (DID) Remote LEC Switch Leased T1 DPO DPT* PBX DID Lines DID Lines * Use CAC’s FXO/DPT 12 Channel Voice Card Called Party’s Direct Extension Figure 8-2. Dial Pulse Origination (DPO) for DID Transport SETTING THE TRANSMIT AND RECEIVE LEVELS The transmit and receive levels for each BRFXS/DPO voice frequency channel can be set between 0 and 9 dB using twelve 6-position DIP switches (CH1 - CH12) on top of the circuit board card (see Figure 8-3).
Chapter 7 Battery Reversal FXS/DPO If your voice channels require different attenuation level settings than the factory defaults, proceed as follows: 1. Release the two thumbscrews on the ABI back plate and remove the plate (see Figure 8-4). 2. To remove the FXS slide-in voice card, pull out the two card ejector latches simultaneously to release the card from the internal connector, then slide the card carefully out from the rear of the ABI chassis (see Figure 8-4). 3.
Chapter 7 Battery Reversal FXS/DPO Figure 8-4. Accessing the BRFXS/DPO Card(s) BRFXS/DPO CONFIGURATION SETTINGS The configuration of the Battery Reversal FXS/DPO card is set by a 4-position DIP switch and 12 individual channel test switches accessed through the ABI back plate (Figure 8-5). The settings for these switches are described below in Table 8-2. Table 8-2.
Chapter 7 Battery Reversal FXS/DPO TP Idle/Busy Channel Test (1 switch per channel) CPE loop state during Trunk Processing (TP) Forward battery applied to all CPE loops during Trunk Processing. Reverse battery applied to all CPE loops during Trunk Processing. Individual channel busy Normal channel operation Channel is busy - reverse battery applied to CPE loop; A/B bits to network are forced to 1/1.
Chapter 7 Battery Reversal FXS/DPO ON OFF BRFXS/DPO BACK PLATE SWITCHES Test 24 Test 23 Test 22 Test 21 Channel 24 Channel 23 Channel 22 SWITCH: FUNCTION: Channel test (12 per card) Applies reverse battery to CPE loop and forces A/B bits sent toward network to 1/1. TP Busy/Idle (1 per card) Selects reverse (busy) or forward (idle) battery on tip-ground relays during trunk processing.
Chapter 7 Battery Reversal FXS/DPO SETTING BRFXS AND DPO TERMINATIONS Battery Reversal FXS Loop-Start The BRFXS/DPO card includes a setting for 2-wire FXS loop-start operation with battery reversal. To enable this option, set Switch A on the 4-position DIP switch to ON so that cadenced ringing voltage is applied to the CPE loop during an incoming call. See Table 8-2. The battery is reversed during this time.
Chapter 7 Battery Reversal FXS/DPO 3. As an aid to network technicians troubleshooting audio problems, 4 seconds of continuous ringback tone are also sent toward the T1 network. 4. After the 4 seconds of continuous ringback tone, the FXS channel will “busy out” toward the T1 network side. Note: Each channel test switch can provide ringing during Trunk Processing (or even when the T1 line is disconnected).
Chapter 7 Battery Reversal FXS/DPO 7-10
Chapter 7 Battery Reversal FXS/DPO 11
