1221 - SCCP rcvd inv Cld Party - no SSN

This message indicates that SCCP received a message from the network that it could not route and was discarded because no subsystem number was present in the called party address.

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
0018.1221    CARD 1103,A     INFO    SCCP rcvd inv Cld Party - no SSN
           SIO=03   OPC=001-001-001      DPC=002-002-002
              SCCP MSG TYPE=04
              CDPA:  NI=1  RI=0  GTI=04  SSNI=0  PCI=1
                     TT=250  NP=04  NAI=010  ADDR=123456789012345678901
                     PC=003-003-003       SSN=005
              CGPA:  NI=1  RI=0  GTI=04  SSNI=0  PCI=1
                     TT=100  NP=07  NAI=012  ADDR=012345678901234567890
                     PC=001-001-001       SSN=004
              LSN=ABCD123  GTTSET=3 203 46
              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
0018.1221    CARD 1103,A     INFO    SCCP rcvd inv Cld Party - no SSN
           SIO=03   OPC=001-001-001      DPC=002-002-002
              SCCP MSG TYPE=04
                GTT on CdPA used MOSMSGTA=9193802053
              CDPA:  NI=1  RI=0  GTI=04  SSNI=0  PCI=1
                     TT=250  NP=04  NAI=010  ADDR=123456789012345678901
                     PC=003-003-003       SSN=005
              CGPA:  NI=1  RI=0  GTI=04  SSNI=0  PCI=1
                     TT=100  NP=07  NAI=012  ADDR=012345678901234567890
                     PC=001-001-001       SSN=004
              LSN=ABCD123  GTTSET=3 203 46
              Report Date:02-07-21  Time:16:20:19

Legend

ADDR

Address

CDPA

Called party address

CGPA

Calling party address

DPC

Destination point code

GTI

Global title indicator

MSG TYPE

Message type (for example, connection request, connection confirm, connection refused)

NAI

Nature of address indicator

NI

Network indicator value

NP

Numbering plan

OPC

Origination point code

PC

Point code

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 sender of the discarded message is using an invalid message format.

If there is only one occurrence, no action is necessary. However, if the condition continues, there may be problem at the node that is sending the invalid message. Contact that node and inform them of the problem.