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GSM 09.02 - Version 5.3.0 - Digital cellular telecommunications - ETSI

GSM 09.02 - Version 5.3.0 - Digital cellular telecommunications - ETSI

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Page 114<br />

<strong>GSM</strong> <strong>09.02</strong> version <strong>5.3.0</strong>: August 1996<br />

8.3 MAP_SEND_ROUTING_INFORMATION service<br />

8.3.1 Definition<br />

This service is used between the Gateway MSC and the HLR. The service is invoked by the Gateway<br />

MSC to perform the interrogation of the HLR in order to route a call towards the called MS.<br />

This is a confirmed service using the primitives defined in table 8.3/1.<br />

8.3.2 Service primitives<br />

Parameter name Request Indication Response Confirm<br />

Invoke Id M M(=) M(=) M(=)<br />

MSISDN M M(=)<br />

CUG Interlock C C(=) C C(=)<br />

CUG Outgoing Access C C(=) C C(=)<br />

Number of Forwarding C C(=)<br />

Network Signal Info C C(=)<br />

IMSI C C(=)<br />

MSRN C C(=)<br />

Forwarding Data C C(=)<br />

User error C C(=)<br />

Provider error O<br />

8.3.3 Parameter use<br />

Table 8.3/1: MAP_SEND_ROUTING_INFORMATION parameters<br />

See subclause 5.6 for a definition of the parameters used in addition to the following:<br />

MSISDN<br />

This is the Mobile Subscriber ISDN number assigned to the called subscriber.<br />

CUG Interlock<br />

If this information is received from ISUP it is transparently passed to the HLR in the request and indication<br />

primitives. This parameter will only be present in the response and confirm primitive if the call is to be<br />

treated as a CUG Call, following the CUG Call Authorization check in the HLR.<br />

CUG Outgoing Access<br />

This parameter may only be present if the CUG Interlock code is also provided. This information is<br />

received from ISUP and is transparently passed to the HLR in the request and indication primitives. This<br />

parameter will only be present in the response and confirm primitive if the call is to be treated as a CUG<br />

Call, following the CUG Call Authorization check in the HLR.<br />

Number of Forwarding<br />

If this information is received from ISUP it is transparently passed to the HLR.<br />

Network Signal Info<br />

This parameter is defined in subclause 5.6.

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