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DEFINITY Enterprise Communications Server Release 5
Maintenance and Test for R5vs/si
555-230-123
Issue 1
April 1997
Maintenance Object Repair Procedures
Page 10-1527UDS1-BD (UDS1 Interface Circuit Pack)
10
UDS1-BD (UDS1 Interface Circuit
Pack)
The UDS1 Interface circuit pack provides an interface to the DS1 facility. UDS1
Interface circuit packs include the TN464B circuit pack and the TN464C circuit
pack.
The TN464B circuit pack is designed to support 32 DS0 channels on a 2.048
Mbps DS1 link, and the TN464C (or greater vintage) circuit pack is designed to
support either 24 DS0 channels on a 1.544 Mbps DS1 link or 32 DS0 channels on
a 2.048 Mbps DS1 link. The TN464C (or greater vintage) circuit pack is optioned
via a removable strap on the circuit pack. The 2 strap positions are labeled
"24CHNL" or "32CHNL."
The DS0 channels can be administered either as trunks to other switches, lines to
off-premises stations, ports to line-side PRI terminating devices, or as ports to
other line-side non-PRI terminating devices.
NOTE:
DS0 channels on the TN464B circuit pack can be administered only as
trunks to other switches.
UDS1 Interface Circuit Pack Maintenance documentation provides a strategy for
maintaining the UDS1 Interface circuit pack. The maintenance strategy deals
with logging the in-line errors reported by the UDS1 Interface circuit pack,
running tests for error diagnosis and recovery, and raising or clearing
maintenance alarms.
The TN464B and TN464C circuit packs support Tie trunks, CO trunks, DID
trunks, OPS lines, narrowband access endpoint ports, the ISDN-PRI signaling
channel (D-channel), and ISDN-PRI trunks (B-channels). The TN464C circuit
pack can also support wideband access endpoint ports and PRI endpoint ports
(B-channels).
The signaling (that is, the call setup) for the Tie trunks, CO trunks, DID trunks and
OPS lines is done on the circuit pack by the UDS1 firmware. Signaling for the
B-channels (ISDN-PRI trunks and PRI endpoint ports) is routed over the
D-channel. ISDN-PRI Trunk and PRI endpoint port signaling (Q.921, Q.931),
however, is not provided by the UDS1 Interface circuit pack. For the MIPS
version of D92, the system software generates and/or receives the actual
MO Name As
It Appears in
Alarm Log
Alarm
Level
Initial System
Technician
Command to Run Full Name of MO
UDS1-BD MAJOR test board PCSSpp sh UDS1 Interface Circuit Pack
UDS1-BD MINOR test board PCSSpp l UDS1 Interface Circuit Pack
UDS1-BD WARNING test board PCSSpp sh UDS1 Interface Circuit Pack