DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126
Issue 4
June 1999
Maintenance Object Repair Procedures
9-473DID-DS1 (Direct Inward Dial Trunk)
9
DID-DS1 (Direct Inward Dial Trunk)
The DID-DS1 trunk provides a digital Direct Inward Dial (DID) trunk from a CO
switch to the system through a DS1 link. A 24-channel DS1 link can support up to
24 DID-DS1 trunk calls simultaneously. A 32-channel link can support up to 30. A
DID-DS1 trunk can be used for digitized voice and data communications with
appropriate DS1 signaling mode (for example, common channel signaling). The
TN767 and TN464 series circuit packs support wink-start and immediate-start
trunks and call processing signaling. See ‘‘DS1-BD (DS1 Interface Circuit Pack)’’
and "UDS1-BD (UDS1 Interface Circuit Pack)" for more information. Throughout
this section, the term DS1 applies to both the DS1 or UDS1 circuit packs.
Information included in this section covers the in-line errors log, initialization
tests, periodic tests, scheduled tests, system technician demand tests, and
alarms escalation and elimination. Two trunk service states are specified in the
DID-DS1 trunk maintenance:
If the DS1 circuit pack is out-of-service, then all trunks on the DS1 Interface
circuit pack are put into the out-of-service state and a Warning alarm is raised.
MO Name (in
Alarm Log) Alarm Level Initial Command to Run Full Name of MO
DID-DS1 MAJOR
1
1. 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 on the set options command.
test trunk
grp
/
mbr
l Direct Inward Dial Trunk
DID-DS1 MINOR test trunk
grp
/
mbr
l Direct Inward Dial Trunk
DID-DS1 WARNING test trunk
grp
/
mbr
Direct Inward Dial Trunk
out-of-service
The trunk is in a deactivated state and cannot be used
for incoming calls.
in-service
The trunk is in an activated state and can be used for
incoming calls.
