Destination Point Code Unavailable—Signaling (23) - Cisco BTS 10200 Troubleshooting Manual

Troubleshooting Signaling Alarms
Destination Point Code Unavailable—Signaling (23)
The Destination Point Code Unavailable alarm (major) indicates that the specified DPC is not available.
This alarm indicates that the BTS 10200 is unable to communicate with the specified DPC in the SS7
network. Determine if the issue is a communication problem between the BTS 10200 and the IP transfer
point (ITP) or if it is related to communication problems between the ITP and the DPC by following
these steps:
Use the BTS 10200 CLI show alarm command to determine if there is an active Signaling Gateway
Step 1
Group Out of Service alarm. This will occur if communication has been lost to at least one of the SGs
in the SG-Group. If so, proceed to the
section on page
Determine if there is an M3UA Cannot Go Active alarm. This occurs if, at the time of startup or failover,
Step 2
the BTS 10200 is not able to communicate with any of the SGs. If this is the case, proceed to the
"Message Transfer Part 3 User Adapter Cannot Go Active—Signaling (122)" section on page
Otherwise, proceed to Step 3.
Step 3 If you arrive at this step, there is probably communication between the BTS 10200 and ITP at the M3UA
and SCCP user adapter (SUA) layers, and a communication problem exists between the ITP and the
unavailable DPC. To confirm this, log on to each ITP, get into enable mode, and enter show cs7 route.
The output of this command tells you if the associated DPC is accessible or not from the ITP point of
view and will look similar to the following:
va-2651-82#show cs7 route
Destination
---------------------- ---- ------------------- -------
229.123.2/24
This output indicates that DPC 229.123.2 is unavailable from the ITP point of view.
Determine if the problem is at the link level or at a higher level outage in the DPC by typing show cs7
Step 4
linkset. If the ITP shows that the DPC is AVAIL, there is a mismatch between the ITP and BTS 10200.
Please contact the Cisco TAC.
Check whether the DPC has been removed from the BTS 10200 database. At the BTS 10200 CLI prompt,
Step 5
enter show call-ctrl-route or show sccp-route and see if the DPC is in any of the routes. If not, the alarm
was raised before the associated routes were deleted. If this is the case, manually clear the alarm.
If you still cannot determine the cause of the problem, contact the Cisco TAC.
Step 6
Cisco BTS 10200 Softswitch Troubleshooting Guide, Release 5.0.x
10-136
"Signaling Gateway Group Is Out-of-Service—Signaling (110)"
10-150. Otherwise, proceed to Step 2.
Prio Linkset Name
INACC 1 lset1chn
Chapter 10 Signaling Troubleshooting
Route
UNAVAIL
10-154.
OL-8723-19