1023 - SCCP rcvd unknown msg type

This UIM may indicate that the SCCP received a message from the network that was discarded because of an unknown message type indicator. The generation of this UIM does not necessarily mean that an MSU has been discarded, however. This UIM can indicate that some feature did not handle an MSU due to its package type. (For example, features such as PPSMS or MO SMS NP/NPP feature that do not handle some SCCP MSU types.) In this case, the feature issues this UIM and passes the MSU to GTT to process.

Example

RLGHNCXA21W 00-04-18 19:01:09 EST  EAGLE 31.3.0
0109.1023    CARD 1103,A  INFO   SCCP rcvd unknown msg type
SIO=0a   OPC=003-255-000  DPC=000-024-000
DATA=26 80 03 09 0e 06 09 00 fe 08 50 55 05
43 00 00 00 00 00
LSN=A1234567

Legend

DATA

Information from the upper layers of SCCP management

DPC

Destination point code

LSN

Linkset name. The name must be unique.

OPC

Origination point code

SIO

Service information octet

Alarm Level: No alarm condition. The message is informational only.

Recovery

No action is necessary.