Avaya S8700 Series, Maintenance Manual

Page: 2343 / 2618

TIE-DS1 (DS1 Tie Trunk)
Issue 1 May 2002 8-1621 555-233-143
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. 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 ch 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.
DS1 tie trunk maintenance provides a strategy to maintain a DS1 tie trunk via a
port on either the TN722 or TN767 DS1 Interface circuit pack or the TN464C/D
UDS1 Interface circuit pack. Throughout this TIE-DS1 section, the term DS1
Interface applies to DS1 and UDS1 circuit packs.
MO’s Name (in
Alarm Log)
Alarm Level
Initial SAT Command to
Run
Full Name of MO
TIE-DS1
1
1. For additional repair information, see ‘‘DS1-BD (DS1 Interface Circuit Pack)’’ on page 8-586 if the
tie trunk is on a TN722 or TN767 DS1 circuit pack. See ‘‘UDS1-BD (UDS1 Interface Circuit Pack)’’
on page 8-1707 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 about the set options command, see
Chapter 7, ‘‘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