SSRC (Synchronization Source)
As specified in RFC 3550, SSRC (Synchronization Source) is the source of a stream of RTP packets, identified by a 32-bit numeric SSRC identifier carried in the RTP header so as not to be dependent upon the network address.
Relevant NENA Documents
NENA-STA-010, Detailed Functional and Interface Standards for the NENA i3 Solution