From Wikipedia:
The Session Initiation Protocol (SIP) is an IETF-defined signaling protocol widely used for controlling communication sessions such as voice and video calls over Internet Protocol (IP). The protocol can be used for creating, modifying and terminating two-party (unicast) or multiparty (multicast) sessions. Sessions may consist of one or several media streams.
More info, based on what you said:
SIPVicious suite is a set of tools that can be used to audit SIP based VoIP systems. It currently consists of four tools:
- svmap - this is a sip scanner. Lists SIP devices found on an IP range
- svwar - identifies active extensions on a PBX
- svcrack - an online password cracker for SIP PBX
- svreport - manages sessions and exports reports to various formats
- svcrash - attempts to stop unauthorized svwar and svcrack scans
I couldn't say if that's what's disconnecting you, or if the disconnection has to do with something else, but maybe the above info will help you a little bit.
