Co-Ds1 (Ds1 Co Trunk) - Avaya S8700 Maintenance Manual

CO-DS1 (DS1 CO Trunk)

CO-DS1 (DS1 CO Trunk)
MO's Name (in
Alarm Log)
CO-DS1
CO-DS1
CO-DS1
1. UU is the universal cabinet number (1–64 for ATM PNC, 1–44 for CSS PNC). C is the carrier
designation (A, B, C, D, or E). SS is the number of the slot where the circuit pack resides (01–21).
pp is the 2-digit port number (01, 02, 03 ...).
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 percent of the trunks in this trunk group are alarmed. For
more information about the set options command, see
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.
A DS1 CO (central office) trunk provides a link for digitized voice or data
communications between the system and a central office switch. 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
NOTE:
32-channel mode is supported only on TN464 circuit packs and on G3r V2
systems.
The DS1-CO MO monitors and maintains a CO trunk port on either a TN767 DS1
Interface circuit pack or a TN464 UDS1 Interface circuit pack. Throughout this
discussion, the term DS1 circuit pack applies to both. See
Interface Circuit Pack)''
8-1707 for more information about these circuit packs. The DS1 circuit pack
supports low level CO trunk signaling interfaces for both ground-start and
loop-start trunks. This maintenance strategy covers the in-line errors log,
initialization tests, periodic tests, scheduled tests, demand tests, and alarm
resolution.
555-233-143
Alarm
Level Initial Command to Run
2
MAJOR test trunk group# member# l
MINOR test trunk group# member# l
WARNING test trunk group# member#
and ''UDS1-BD (UDS1 Interface Circuit Pack)'' on page
Full Name of
1
MO
DS1 CO Trunk
DS1 CO Trunk
DS1 CO Trunk
Chapter 7, ''Maintenance Commands''.
''DS1-BD (DS1
Issue 1 May 2002 8-435