1054 - SCCP rcvd inv LSS - bad SSN

The SCCP received a message destined to a local subsystem that was discarded because of a bad subsystem number (SSN).

Example

This output indicates an error against the original destination rather than the redirected destination.

RLGHNCXA21W 02-07-21 16:20:19 EST  EAGLE 37.5.0
0241.1054    CARD 1101,A1  INFO      SCCP rcvd inv LSS - bad SSN
                 SIO=03   OPC=1-200-2           DPC=3-054-4
                 CDPA LENGTH=019   MSG TYPE=04
                 CDPA: AI=05 PC=1-050-1          SSN=006 TT=007
                       ADDR=ABCDEF0123456789ABCDE
                 LSN=ABCD123
                 Report Date:02-07-21  Time:16:20:19

This alternate output includes the redirected destination and is used when a redirected MSU encounters an error.

RLGHNCXA21W 02-07-21 16:20:19 EST  EAGLE 37.5.0
0241.1054    CARD 1101,A1  INFO      SCCP rcvd inv LSS - bad SSN
                 SIO=03   OPC=1-200-2           DPC=3-054-4
                 CDPA LENGTH=019   MSG TYPE=04
                    GTT on CdPA used MOSMSGTA=9193802053
                 CDPA: AI=05 PC=1-050-1          SSN=006 TT=007
                       ADDR=ABCDEF0123456789ABCDE
                 LSN=ABCD123
                 Report Date:02-07-21  Time:16:20:19

Legend

ADDR: Address
CDPA: Called party address
CGPA: Calling party address
gti: Global title indicator
LSN: Linkset name. The name must be unique.
msg type: Message type
nai: Nature of address indicator
ni: Network indicator value
np: Numbering plan
OPC: Origination point code
PC: Point code for the SS7 end user (OPC).
pci: Protocol control information
RI: Routing indicator
SIO: Service information octet
SSN: Subsystem number
ssni: Subsystem number indicator
TT: Translation type

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

Recovery

The EAGLE 5 ISS supports only one subsystem.

All other local subsystem numbers are invalid. Check translations on the originating switch to determine the problem.