TM Hotwire 7976 M/SDSL Standalone Termination Unit with G.703 Interface Installation Instructions Document Number 7976-A2-GZ40-00 March 1999 Product Documentation on the World Wide Web We provide complete product documentation online. This lets you search the documentation for specific topics and print only what you need, reducing the waste of surplus printing. It also helps us maintain competitive prices for our products. Complete documentation for this product is available at www.paradyne.com.
Connecting Power to the Unit If your package includes a power pack: Plug the power pack into an ac outlet having a nominal voltage rating between 100–240 Vac. Connect the output cable of the power pack to the connector marked POWER on the rear panel. If your package includes a direct-connection +24 Vdc power cable: Connect the unit to an external dc power source as described in Connecting the Unit to an Optional External +24 Vdc Power Source.
Connecting to the Network Procedure To connect your unit to the network: 1. Connect one end of the supplied network cable into the rear panel DSL jack. 2. Connect the other end to your DSL network interface. NOTE: Do not use a flat VF network cable as this may severely degrade the performance of the termination unit. Use only Cat 5 twisted-pair network cable. Connecting to a DTE The G.
Entering Identity Information After accessing your unit for the first time, use the Change Identity screen to determine SNMP administrative system information that will be displayed on the Identity screen of the Status branch.
In a DSLAM-to-standalone configuration: The devices synchronize without altering factory defaults, since the CO unit defaults to LTU mode, and the CP unit defaults to NTU mode. In a standalone-to-standalone configuration: One unit must be changed to run in LTU mode, since standalone units have a factory default setting of NTU mode. In both cases the clocking source may have to be altered depending on network requirements.
Configuration Edit/Display The Configuration Edit/Display screen is displayed when the current, customer, or default configuration is loaded. To access the Configuration Edit/Display screen, follow this menu selection sequence: Main Menu → Configuration → Current Configuration – or – Main Menu → Configuration → Default Factory Configuration main/config/edit Hotwire Model: 7976 CONFIGURATION EDIT/DISPLAY Î Network G.
Table 1. Network Interface Options Margin Threshold Possible Settings: –5db, –4db, –3db, –2db, –1db, 0db, 1db, 2db, 3db, 4db, 5db, 6db, 7db, 8db, 9db, 10db Default Setting: 0db Determines the level, expressed in decibels, at which a signal-to-noise margin alarm condition is reported. Excessive Error Rate Threshold Possible Settings: 1E–4, 1E–5, 1E–6, 1E–7, 1E–8, 1E–9 Default Setting: 1E–6 Determines the error rate at which an excessive error rate (EER) condition is recognized.
Table 2. G.703 Interface Options Port Status Possible Settings: Enabled, Disabled Default Setting: Enabled Specifies whether the port can be configured and used to transmit and receive data. Framing Possible Settings: Framed, Unframed Default Setting: Framed Specifies whether G.704 framing is used for the G.703 interface. Line Framing (LTU Only) Possible Settings: CRC4, noCRC4 Default Setting: noCRC4 Specifies the framing format to be used by the G.703 interface.
Table 3. System Options DSL Mode Possible Settings: LTU, NTU Default Setting: NTU Controls whether the unit is configured as a control unit or tributary unit. NOTE: Changing this option will reset the card. Test Timeout Possible Settings: Enable, Disable Default Setting: Enable Allows tests to end automatically. The feature should be enabled when the unit is remotely managed, so that control can be regained after a test is accidentally executed.
Table 4. Communication Port Options (2 of 2) Parity (Terminal Use Only) Possible Settings: None, Odd, Even Default Setting: None Specifies the parity of the communication port. Stop Bits (Terminal Use Only) Possible Settings: 1, 1.5, 2 Default Setting: 1 Specifies the number of stop bits for the communication port. Ignore Control Leads (Terminal Use Only) Possible Settings: Disable, DTR Default Setting: Disable Specifies whether DTR is used.
Table 5. Telnet Session Options Telnet Session Possible Settings: Enable, Disable Default Setting: Enable Specifies if the Termination Unit will respond to a Telnet session request from a Telnet client on an interconnected IP network. Telnet Login Required Possible Settings: Enable, Disable Default Setting: Disable Specifies whether a user ID and password are required to access to the ATI through a Telnet session. Login IDs are created with a password and access level.
Table 6. Communication Protocol Options Node IP Address Possible Settings: 000.000.000.000 – 223.255.255.255 Default Setting: 000.000.000.000 Specifies the Node IP address. Node IP Address is only available when the standalone unit is configured as an LTU. Node Subnet Mask Possible Settings: 000.000.000.000 – 255.255.255.255 Default Setting: 000.000.000.000 Specifies the Node Subnet Mask. Node Subnet Mask is only available when the standalone unit is configured as an LTU.
Table 7. General SNMP Management Options SNMP Management Possible Settings: Enable, Disable Default Setting: Disable Enables or disables the SNMP management features. Community Name 1 Possible Settings: ASCII text field, Public Default Text: Public Identifies the name of the community allowed to access the unit’s MIB. The community name must be supplied by an external SNMP manager when that manager attempts to access an object in the MIB.
Table 8. SNMP NMS Security Options NMS IP Validation Possible Settings: Enable, Disable Default Setting: Disable Specifies whether security checking is performed on the IP address of SNMP management systems attempting to access the node. Number of Managers Possible Settings: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 Default Setting: 1 Specifies the number of SNMP management systems that can send SNMP messages. NMS n IP Address Possible Settings: 000.000.000.000 – 223.255.255.255, Clear Default Setting: 000.000.000.
Table 9. SNMP Traps Options SNMP Traps Possible Settings: Enable, Disable Default Setting: Disable Controls the generation of SNMP trap messages. The options for addresses and types of traps are located in this table. Number of Trap Managers Possible Settings: 1, 2, 3, 4, 5 Default Setting: 1 Sets the number of SNMP management systems that will receive SNMP traps. NMS n IP Address Possible Settings: 000.000.000.000 – 223.255.255.255, Clear Default Setting: 000.000.000.
Configuring AutoRate The M/SDSL AutoRate function is controlled from the Network Interface Options screen and allows you to enable or disable AutoRate only from a unit configured as an LTU. To access the Network Interface screen, follow this menu selection sequence: NOTE: AutoRate is designed to find the best rate possible for your DSL loop conditions. After the DSL loop is up units should be configured to run in fixed rate.
Procedure The AutoRate option is defaulted to Disable. To enable AutoRate: 1. Position the cursor in the AutoRate field and press the spacebar. The AutoRate field toggles to Enable and the DSL Line Rate field displays. 2. Enter a DSL Line Rate and press Enter. Your payload rate is set to a default value of 1984. Use Table 10, Fixed Rate Payload Rates and DSL Line Rates, to set your DSL Line Rate and Payload Rate according to whether you are configured for Voice (signaling) or Data.
Configuring the Unit Using the Internal Switches If desired, use internal Switchpacks S1 and S2 to manually configure the unit. ! HANDLING PRECAUTIONS FOR STATIC-SENSITIVE DEVICES 496-15104 This product is designed to protect sensitive components from damage due to electrostatic discharge (ESD) during normal operation. When performing installation procedures, however, take proper static control precautions to prevent damage to equipment.
Switchpack Locations Use this illustration to locate Switchpacks S1 and S2.
Switchpack Definitions Manually change configuration options by moving Switchpack S1 DIP switches on the card. Table 11 lists Switchpack S1 definitions. Table 11. Switchpack S1 Definitions Switch # . . . Allows you to . . . 1 Enable or disable Switchpacks S1 and S2. Default in Bold OFF = Switchpacks Disabled ON = Switchpacks Enabled 2 Control line termination. OFF = 120 Ohm ON = 75 Ohm 3 Select the unit’s primary timing source. Only valid for units configured as LTU.
Table 12 lists Switchpack S2 definitions. Table 12. Switchpack S2 Definitions Switch # . . . Allows you to . . . 1 Control whether the unit is an LTU or an NTU. Default in Bold OFF = NTU ON = LTU 2 Control enabling and disabling of the AutoRate capability. Only valid for units configured as LTU. OFF = Fixed Rate ON = AutoRate Enabled 3, 4, 5 Select one of eight preset DSL line rates (refer to Table 13).
! Important Safety Instructions 1. Read and follow all warning notices and instructions marked on the product or included in the manual. 2.
EMI Warnings ! WARNING: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications.
Asynchronous Terminal Interface Menu The following illustration shows the menu paths to the different ATI screens. Main Status Test Configuration Control Reset Change Download AutoRate Code Identity Apply Administer Reset Download Device Logins System and Performance Display Identity Test Status Statistics LEDs Network Network G.703 Error Performance Statistics Statistics Statistics Network and G.
