Not able to fully under stood the questions. are you asking other implementation of Alert-Info or you use you want to know the other user of specific alert urn "urn:alert:service:call-waiting"
Their are few more implementation example for alert URN urn:alert:tone:{tone-indication} where the tone-indication identifies the semantic or rendering characteristics of a ring tone. urn:alert:ringback:{ringback-indication} where the ringback-indication is a unique identifier for a country-specific ringback tone. below is the link with more details. https://tools.ietf.org/html/draft-liess-dispatch-alert-info-urns-01#section-4.4 Not seen urn:alert:service:call-waiting other than 3GPP. On Fri, Jun 17, 2016 at 1:09 AM, Dale R. Worley <wor...@ariadne.com> wrote: > Does anyone know of implementations of the 'alert' URNs in Alert-Info > (RFC 7462) beyond the use of urn:alert:service:call-waiting by 3GPP? > > Dale > _______________________________________________ > Sip-implementors mailing list > Sip-implementors@lists.cs.columbia.edu > https://lists.cs.columbia.edu/mailman/listinfo/sip-implementors > -- Thanks and Regards Dheeraj kumar 9999733671 _______________________________________________ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/sip-implementors