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Cisco BTS 10200 Softswitch Troubleshooting Guide, Release 5.0.x
OL-8723-19
Chapter 10 Signaling Troubleshooting
Troubleshooting Signaling Alarms
Signaling Gateway Group Is Out-of-Service—Signaling (110)
The Signaling Gateway Group is Out-of-Service alarm (major) indicates that the signaling gateway
group is out-of-service. The primary cause of the alarm is that all the SCTP associations between the CA
and the SGs are out-of-service. To correct the primary cause of the alarms, make sure that all Ethernet
connections on the CA and SGs are plugged in. Also make sure all associated IP routers are operational.
The secondary cause of the alarm is that the M3UA layer is down between the CA and SGs. To correct
the secondary cause of the alarm, use a snooper application to determine why the M3UA layer is down.
This alarm indicates that after communication to the SG group was established, it was lost. This indicates
that communication to associated SGs is down, which also indicates that communication to all SGPs is
down. See the
“Signaling Gateway Failure—Signaling (113)” section on page 10-152
to determine why
the associated SGs are down.
Stream Control Transmission Protocol Association Degraded (One of Two
Internet Protocol Connections Down)—Signaling (111)
The Stream Control Transmission Protocol Association Degraded (One of Two Internet Protocol
Connections Down) alarm (major) indicates that the SCTP association is degraded. The primary cause
of the alarm is that a single Ethernet connection on CA or SGP is unplugged or severed. To correct the
primary cause of the alarm, plug in all Ethernet connections or repair if severed. The secondary cause of
the alarm is a SCTP communication problem–or protocol timeout. To correct the secondary cause of the
alarm, use a snooper application to determine why the SCTP association is degraded.
Message Transfer Part 3 User Adapter Troubleshooting Procedure
This alarm indicates that one of the two sides of the multi-homed SCTP connection is down.
Communication still exists if the other side of the multi-homed connection is up. Refer to the
, or contact the Cisco TAC for assistance in resolving
this issue.
Signaling Connection Control Part User Adapter Troubleshooting Procedure
This is either an IP routing problem or an ITP Ethernet port hardware failure. Change the hardware
immediately, if it is a hardware failure, to prevent dual outage of the ITP’s IP communication.