DID-TRK (Direct Inward Dial Trunk)
Issue 1 May 2002
8-515
555-233-143
DID-TRK (Direct Inward Dial 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 about 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.
Direct Inward Dial trunks connect the switch to the CO, and allow outside parties
to call directly to an extension in the system. DID trunk circuit packs support eight
incoming-only ports. Each port provides an interface between the 2-wire analog
CO line and the 4-wire TDM bus on the switch.
DID Trunk Operation
The DID port receives three to five digits from the CO that are used to directly
connect an outside caller to the called station without assistance from an
attendant. For each call, the CO switch signals the system by opening and
closing individual DID loops (one of the eight ports), causing the starting or
stopping of loop current.
MO’s Name (in
Alarm Log)
Alarm Level
Initial SAT Command to
Run
1
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 ...).
Full Name of MO
DID-TRK
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 percent of the trunks in this trunk group are alarmed.
test port UUCSSpp l
DID Trunk
DID-TRK
MINOR
test port UUCSSpp l
DID Trunk
DID-TRK
WARNING
None
DID Trunk
Summary of Contents for S8700 Series
Page 50: ...Maintenance Architecture 555 233 143 1 26 Issue 1 May 2002 ...
Page 74: ...Initialization and Recovery 555 233 143 3 12 Issue 1 May 2002 ...
Page 186: ...Alarms Errors and Troubleshooting 555 233 143 4 112 Issue 1 May 2002 ...
Page 232: ...Additional Maintenance Procedures 555 233 143 5 46 Issue 1 May 2002 ...
Page 635: ...status psa Issue 1 May 2002 7 379 555 233 143 status psa See status tti on page 7 406 ...
Page 722: ...Maintenance Commands 555 233 143 7 466 Issue 1 May 2002 ...