Exclude OPC in SCCP
Calling-Party-Address on Gs Interface for Route-On-GT
The SGSN sends Location Update
Request (BSSAP+LOCATION-UPDATE-REQUEST) over the Gs interface but does not
receive a Location Update Accept (BSSAP+LOCATION_AREA_UPDATE_ACCEPT) from some
MSC/VLRs as the SGSN includes the Originating Point Code (OPC) in the SCCP
calling-party-address IE when the routing-indicator is set to 'ROUTE on GT'.
The MSC/VLRs are unable to perform GT-based routing due to the presence of OPC
in the calling-party-address generated by SGSN. The OPC has to be excluded from
the SGSN generated SCCP Calling Party Address towards MSC/VLR on Gs interface.
The OPC is not relevant in the SCCP Calling Party Address when routing
indicator is set to "Route on GT". A new CLI-based control is introduced for
the operators on Gs-service to include or exclude the OPC in the SCCP
calling-party-address if the routing indicator is 'Route on gt'. By default the
SGSN includes the OPC in SCCP calling party address when the routing-indicator
is set to 'ROUTE on GT'. The operational benefit of this feature is that the
MSCs/VLRs can perform GT-based routing easily. This feature is compliant with
ITU Q.714 standard.
describes how the operator can choose to include or exclude OPC in the
SGSN-generated SCCP calling-party-address if the routing indicator is 'Route on
vlr command is used to define the configuration of the
VLR used in the GS Service. A new keyword
exclude-opc-in-sccp is introduced in the
vlr command under the GS Service Configuration Mode.
The operator can configure this command to exclude or include OPC in the
SGSN-generated SCCP calling-party-address for "route-on-gt".
By default this
keyword is not enabled and the OPC is included in the SCCP calling party
address for “route-on-gt”.
following command to verify the configuration of this feature.
show gs-service service-name
The new counter
SCCPCallingParty Address is introduced which indicates
vlr command is configured to either include or exclude
OPC in the SCCP Calling Party Address if the routing indicator is 'Route on
SCCPCallingParty Address: Included/Excluded