On Apr 16, 2008, at 6:35 PM, Robins, Ellen wrote: > Hi everyone, > On the subject of E.164 discussion is there a universal preffix or > list > of registered preffixes to signify VoIP call. > For example, the same E.164 Mobile or PSTN services numbers can be > used > for dialling Video or Voice Call over IP. > Scenario: Alice has her Mobile service number but would like to > receive > a call instead of Mobile on her PC SIP Soft Client. > Are there a preffix XYZ that would indicates to network that this call > shall be routed via Gateway to IP Client instead of Mobile ?
No, there is to my knowledge no such prefix. In fact, such an approach is contraindicated by use cases: One might envision a dual-mode phone that registers the same number concurrently via mobile protocols and SIP. Callers from the mobile or PSTN world would probably reach it via mobile, and callers from the Internet would reach it via SIP. But even that isn't cut-and-dried, since a phone-switch or pbx somewhere on the route between a mobile caller and the dual-mode phone might do a least- cost path determination and decide to gateway the call to SIP for the remainder of the path. Even more confusingly, there are scenarios where several such translations might occur. -- Dean _______________________________________________ Sip mailing list https://www.ietf.org/mailman/listinfo/sip This list is for NEW development of the core SIP Protocol Use [EMAIL PROTECTED] for questions on current sip Use [EMAIL PROTECTED] for new developments on the application of sip
