DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126
Issue 4
June 1999
Maintenance Object Repair Procedures
9-1824UDS1-BD (UDS1 Interface Circuit Pack)
9
TN2242 serviceability
Hardware connections
This circuit pack can be
■ mated to another circuit pack of the same type when interconnecting two
DEFINITYs.
■ directly-connected to the TDM network device.
■ directly-connected to another vendor PBX using ISDN PRI signaling.
Loopbacks
■ There is no process to automatically signal the remote end to provide
loopbacks for testing purposes. All loopbacks to be tested with a single
circuit pack must be local loopbacks on the circuit pack.
■ Remote loopbacks may be possible with the TDM network equipment with
appropriate coordination between BCS Services Technicians and the
service technicians of the TDM equipment (considered a CPE device).
The TN464C, D, E, and F Universal DS1 Interface circuit packs provide an
interface to the DS1 facility and are designed to support 24 DS0 channels on a
1.544 Mbps DS1 link or 32 DS0 channels on a 2.048 Mbps link. (The 32-channel
interface is not supported on G3r V1 systems.) The DS0 channels can be
administered as trunks to other switches, lines to off-premises stations, ports to
line-side PRI terminating devices, or ports to other line-side non-PRI terminating
devices. (DS0 channels on TN464/Bs can only be administered as trunks to other
switches.) For more information on how TN464 ports can be used, see the
following sections in this chapter ISDN-SGR, ISDN-TRK, ISDN-LNK, PE-BCHL,
TIE-DS1, CO-DS1, DID-DS1, OPS-LINE and WAE-PT. For information on other
DS1 circuit packs, see DS1-BD.
Throughout this section on the UDS1-BD MO name, the term TN464 will mean
any TN464C or later suffix UDS1 circuit pack. If part of this section refers to a
specific suffix TN464 board, it will be noted as such.
The UDS1 maintenance strategy includes logging in-line errors reported by the
UDS1 circuit pack, running tests for error diagnosis and recovery, and raising or
clearing maintenance alarms.
TN464 circuit packs support the following:
■ Digital Tie, CO, and DID trunks
■ DS1 off-premises (OPS) lines
■ Narrowband and wideband access endpoint ports
■ ISDN-PRI trunks and accompanying signaling channel
