Lucent Technologies Release 7 TN2242 serviceability Hardware connections, Loopbacks

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 c an be
■mated to another circuit p ack of the same type when interc onnecting two
DEFINITYs.
■directly-connec ted to the TDM network device.
■directly-connec ted to another vendor PBX using ISDN PRI signaling.
Loopbacks
■There is no process to automatically sig nal the remote end to provide
loopbacks for testing purposes. All loopb acks to be tested w ith a single
circuit pack must be local loopb acks on the circuit p ack.
■Remote loopbacks may be p ossible with the TDM network equipment with
appropriate coord ination 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 p rovide an
interface to the DS1 facility and are d esigned to supp ort 24 DS0 channels on a
1.544 Mbps DS1 link or 32 DS0 channels on a 2.048 Mbp s link. (The 32-channel
interface is not supp orted on G3r V1 systems.) The DS0 channels can be
administered as trunks to other switc hes, lines to off-premises stations, ports to
line-side PRI terminating devic es, or ports to other line-side non- PRI terminating
devices. (DS0 channels on TN464/Bs can only b e administered as trunks to other
switches.) For more information on how TN464 ports ca n be used, see the
following sections in this c hapter ISDN-SGR, ISDN-TRK, ISDN-LNK, PE-BCHL,
TIE-DS1, CO-DS1, DID-DS1, OP S-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 par t of this section refers to a
specific suffix TN464 board, it will be noted as such.
The UDS1 maintenance strategy includes log ging in-line errors repor ted by the
UDS1 circuit pack, running tests for error diagnosis and recovery, and raising or
clearing maintenance ala rms.
TN464 circuit packs sup port the following:
■Digital Tie, CO, and DID trunks
■DS1 off-premises (OPS) lines
■Narrowband and wid eband acces s endpoint ports
■ISDN-PRI trunks and accompanying sig naling channel