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Производитель: ADTRAN
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INSTALLATION .......................................................2 3. TESTING....................................................................7 4. MAINTENANCE .....................................................13 5. WARRANTY AND CUSTOMER SERVICE.........14 FIGURES Figure 1. ADTRAN U-BR1TE V.....................................1 Figure 2. Backplane Pin Assignments..............................3 Figure 3. Time Slot Assignments for 2B+D Service in SLC Mode I w/ D1D Counting .........................3 Figure 4. Time Slots that CANNOT Contain BR1TE Cards ..................................................................4 Figure 5. SW1, SW3, and SW6 Labeling.........................4 Figure 6. Position Switch Settings at Network Locations for ISDN Applications ......................................6 Figure 7. U-BR1TE V IDSL/DDS Circuit Diagram ......10 Figure 8. IDSL/DDS Loopback Response .....................11 Figure 9. ADTRAN U-BR1TE Bidirectional Loopback ..12 Figure 10. IDSL/DDS Remote End Initiated Loopback, Local Loop ......................................................12 Figure 11. IDSL/DDS Remote End Initiated Loopback, Customer Loop ................................................12 Figure 12. IDSL/DDS Trouble Codes ..............................13 Figure 13. DS0 Latching Loopback .................................14 TABLES Table 1. SW1, SW3, and SW6 Option Settings...............5 Table 2. Rotary Switch Options .......................................7 Table 3. LED Indication...................................................7 1. GENERAL This practice provides installation and maintenance procedures for the ADTRAN D4 U-BR1TE V w/PWR and DDS Loopbacks, P/N 1104020L4. Figure 1 is an illustration of the U-BR1TE V. ISDN/DDS The U-BR1TE employs features for both ISDN and DDS transport. ISDN comprises the major functionality and is described in this section. A description of DDS functionality is located in Section 3. Revision History Issue 3 of this document includes 2B leased mode operation and revises the CLEI code. Figure 1. ADTRAN U-BR1TE V LP CR ACT TEST ERR (Rx) L O G I C OUT (Tx) IN U-BR1TE V D4-UBR1PWR/DDS 1104020L4 B2 TEST B1 PTRNNORM 21 AD6 AD5 AD4 AD3 AD2 AD1 NT1 LPTX CRTX LPBK SW1 SW2 SW4 SW5 SW3 SW6 Functional Description The U-BR1TE V is a line card that plugs into a single channel slot of an AT&T D4/SLC®-96 channel bank. It provides an ISDN U-interface and allows the transport of Basic Rate 2B+D information over T1 carriers and twisted pair wiring. The U-BR1TE V combines the functionality of a standard U-BR1TE V and a U-Repeater Powering Module which will simplify the installation of the U-Repeater. Span powering also allows deployment of 2-wire DDS when an IDSL OCU-R is used to terminate the ISDN local loop. This eliminates the need to provide AC power at the customer premises. The U-BR1TE V is used at both the Central Office Terminal and Remote Terminal locations. Clear channel capability (B8ZS) is not required of the T1 facility if zero byte substitution is enabled. The U-BR1TE V plugs into a single channel slot of the D4 bank, but can require three time slots when transporting 2B+D information. Block error rate performance over the T1 facility is monitored and is available to the network. Trademarks: Any brand names and product names included in this document are 61104020L4-5C trademarks, registered trademarks, or trade names of their respective holders. Features The U-BR1TE V features support both ISDN and DDS, plus features common to both as listed here: ISDN Features • Span powers U-repeaters with 43 mA @ -28 to -120 VDC for ISDN applications. • Internal test pattern allows for testing of individual B Channels without requiring external test equipment. • Transportation of ISDN Basic Rate 2B+D information over T1 facilities in the 3-DS0 format specified in TR-NWT-000397. • B1 and B2 loopback addressability at the front panel for the NT1 and up to six devices in the Network-to-Customer direction. DDS Features • Span powers an IDSL OCU-R with 12 mA @ -120 VDC for DDS applications. • Transmit MUX-Out-of-Sync (MOS) trouble code upstream for IDSL loss of signal, loss of sync, or open loop. • Perform bidirectional loopback (loop and network) when commanded into DS0 DP loopback from the network direction only. • Initiate in-band OCU loopback to loop the IDSL OCU-R via front panel push button. • Loopback release in response to TIPs per TR62310 or front panel push button. • Remap all subsequent DS0 DP loopback codes into respective EOC loopbacks to loop back respective downstream U-Repeaters, TRISDN elements, and U-BR1TES when optioned for 1B+D, or 2B+D. • Pass OCU loopback code through to loop the IDSL OCU-R. • Pass CSU loopback code through to loop the CSU/DSU and simultaneously send a remap to the NT1 EOC address. • Returns Abnormal Station Code (ASC) to the network in B1 during loopback conditions initiated by the IDSL OCU-R. 2B Leased Mode Features • DDS loopback operation during 2B ...