DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126
Issue 4
June 1999
Maintenance Object Repair Procedures
9-1737TIE-DS1 (DS1 Tie Trunk)
9
TIE-DS1 (DS1 Tie Trunk)
NOTE:
Many trunk problems are caused by incorrect settings of parameters on the
trunk group administration form. Settings must be compatible with the local
environment and with parameter settings on the far-end. Refer to
DEFINITY
Enterprise Communications Server Release 5.4 Administration and Feature
Description
, for information on how to administer trunks. The Application
Notes section of that book shows the correct settings for administrable
timers and other parameters on a country-by-country basis.
The DS1 tie trunk provides both voice and data communications between two
PBX switches. There are two types of DS1 interfaces:
■ 24 DS0 channels on a 1.544 Mbps link
■ 31 DS0 channels + 1 framing channel on a 2.048 Mbps link
32-channel mode is supported only on TN464 circuit packs and on G3r V2
systems.
DS1 Tie Trunks are used widely in the Distributed Communications System (DCS)
and Central Attendant Service (CAS) system features.
A DS1 tie trunk can also be used as an access endpoint which is a non-signaling
channel with bandwidth for voice-grade data, 56 Kbps data or 64 Kbps data.
MO Name (in
Alarm Log) Alarm Level Initial Command to Run Full Name of MO
TIE-DS1
1
1. For additional repair information, see DS1-BD documentation if the tie trunk is on a TN722 or
TN767 DS1 circuit pack. See UDS1-BD documentation if the tie trunk is on a TN464C/D UDS1
circuit pack.
MAJOR
2
2. A MAJOR alarm on a trunk indicates that alarms on these trunks are not downgraded by the
set options command and that at least 75% of the trunks in this trunk group are alarmed. For
more information on the set options command, see Chapter 8, ‘‘Maintenance Commands’’
test trunk
grp/mbr
l
3
3. For TN767B vintage 8 or 9 circuit packs, a failure of Test #136 causes a subsequent failure of
Test #7. Test #136 is part of the short sequence and generates off-board alarms Test #7 is part
of the long sequence and generates on-board alarms. Before entering busyout, release, reset
or test board long commands, check the vintage number of the circuit pack with list
configuration board UUCSS. If it is TN767B vintage 8 or 9, do not use the above commands
until first making sure that Test #136 passes via test board short. Otherwise, extraneous
on-board alarms may be generated.
DS1 Tie Trunk
TIE-DS1 MINOR test trunk
grp/mbr
l
3
DS1 Tie Trunk
TIE-DS1 WARNING test trunk
grp/mbr
DS1 Tie Trunk
