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general mechanism for delivering supplementary services is explained in this paper. Supplementary services messages are exchanged by means of ROSE (Remote Operations Service Extension).

* H.450.2, Call Transfer Supplementary ServiceE.g. explains how a party-B can turn an active call between party-A and party-B into a call between party-A and a new party-C.

* H.450.3, Call Diversion Supplementary ServiceE.g. explains how an IP phone can activate a diversion to e.g. a cell phone.E.g.

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