56 SPIRITS WG vkg Tue, Mar 18, IETF SPIRITS WG 56 th IETF, San Francisco, CA SPIRITS Protocol Issues Update presented by: Vijay Gurbani

56 SPIRITS WG vkg Tue, Mar 18, Changes to I-D Latest changes as discussed on the WG mailing list: –Subscribing to multiple DPs in one SUBSCRIBE request Specification does not prevent anyone from doing so, but neither does it condone this behavior. Aggregation of multiple DPs in a set is a nice option for those services which require a logical OR of the DPs (presence, for example).

56 SPIRITS WG vkg Tue, Mar 18, Changes to I-D Resolution on the WG list: –The protocol allows a subscriber to subscribe to a set of DPs. –A NOTIFY is sent when any one of the DPs becomes active. –The subscription is considered spent after the notification; a new SUBS will be needed to resurrect the subscription. This behavior is scoped as a MAY (leaving it to the discretion of the service provider on how to best provide the service).

56 SPIRITS WG vkg Tue, Mar 18, Changes to I-D Representation of non-call related events in SPIRITS. –Location –Mobility –Other services