Content for TS 23.015 Word version: 19.0.0
2.2 Barring of Incoming Calls or Mobile Terminated Short Messages
2.2.1 Application or Change of Barring in the HLR
2.2.2 Invocation of Barring
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2.2 Barring of Incoming Calls or Mobile Terminated Short Messages p. 9
2.2.1 Application or Change of Barring in the HLR p. 9
If barring of incoming calls or mobile terminated short messages is applied to a subscription (or existing barring of incoming calls or mobile terminated short messages is modified or removed) by administrative action in the HLR, the HLR will update the subscription information accordingly. It is not necessary to transfer the updated subscription information to the VLR or the SGSN.
2.2.2 Invocation of Barring p. 9
Barring of incoming calls is invoked in the HLR. If the HLR receives a request for routing information for a call directed to a mobile station which is subject to barring of incoming calls, the HLR will return a negative response to the request for routing information, with an appropriate error indication. The Gateway MSC may relay this error indication to the originating network using the appropriate telephony signalling system, or may connect the call to a recorded announcement to be determined by the network operator.
Barring of mobile terminated short messages is invoked in the HLR. If the HLR receives a request for routing information for a short message directed to a mobile station which is subject to barring of incoming calls, the HLR will return a negative response to the request for routing information, with an appropriate error indication. This error indication will be relayed to the originating Short Message service centre by the Gateway MSC using the protocol defined in TS 23.040.
Operator Specific Barring may apply to outgoing or incoming calls, or mobile originated or mobile terminated short messages; if it applies to incoming calls or mobile terminated short messages, it is invoked in the HLR, as described above.
An indicative message flow diagram for the handling of Operator Determined Barring of incoming calls is given in Figure 2.2.2-1. For the case where the call is connected to an address determined by the network operator, this address is assumed to be directly connected to the GMSC, so that no inter-MSC signalling is required.
An indicative message flow diagram for the handling of Operator Determined Barring of mobile terminated short messages is given in Figure 2.2.2-2.
Figure 2.2.2-2: Operator Determined Barring of Mobile Terminated Short Messages
(⇒ copy of original 3GPP image)
(⇒ copy of original 3GPP image)
