QoS support for VoIP traffic to prepare emergency

Emergency communication support on the Internet is an important task. In the event of an emergency, such as a disaster, accepting as many VoIP calls as possible in limited bandwidth is an important requirement. Another important requirement is providing high quality service for important communications (ex. 911 services in the US). But, for non-emergency communication, the number of sessions (calls) that can be supported is much more important than the quality of each session. SIP supports various kinds of media; not ...