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Added Appendix : examples of RSVP extensions usage to implement different Emergency Services: If one wants to implement an emergency service purely based on Call Queueing/Displacement, one can achieve this by signaling emergency calls: * using "Resource-Priority" Header in SIP * not using Admission-Priority Policy Elt in RSVP * not using Preemption Policy Elt in RSVP If one wants to implement an emergency service based on Call Queueing/Displacement and on "prioritized access to network layer resources", one can achieve this by signaling emergency calls: * using "Resource-Priority" Header in SIP * using Admission-Priority Policy Elt in RSVP * not using Preemption Policy Elt in RSVP Dealing with various flavors of Emergency services (eg without/with/with-limited preemption, with/without call queueing, with/without call displacement) |