A.3.2 Time Alignment

29.2323GPPMedia Gateway Controller (MGC) - Media Gateway (MGW) interfaceRelease 17Stage 3TS

Time alignment frames shall be relayed unmodified.

Annex B (informative):
Examples for Usage of the 3GUP Package "Initialization Direction" Property

Figure B.1: 3G to 3G Call (A to B) , originating RAB established after Nb bearer,
same codec configuration on originating Iu and Nb bearers

NOTE: The Initialization Direction property of the Nb termination of MGW A could alternatively be set to ‘Outgoing’, but different RFCIs may then be initialized on the Iu and Nb bearers.

Figure B.2: 3G Originating Call, originating RAB established after Nb bearer,
same codec configuration on originating Iu and Nb bearers

NOTE: The Initialization Direction property of the Nb termination of MGW A could alternatively be set to ‘Outgoing’, but different RFCIs may then be initialized on the Iu and Nb bearers.

Figure B.3: 3G Terminating Call

Figure B.4: 3G to 3G Call (A to B), originating RAB established before or in parallel to the Nb bearer or different codec configuration on originating Iu and Nb bearers

Figure B.5: 3G Originating Call, originating RAB established before or in parallel to the Nb bearer or
different codec configuration on originating Iu and Nb bearers

Figure B.6: 2G to 2G Call (A to B)

Annex C (Normative):
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