https://app.kbone.net/vault/rfc/docid/3715
RFC3332: Signaling System 7 (SS7) Message Transfer Part 3 (MTP3) - User Adaptation Layer (M3UA)
Network Working Group G. Sidebottom Request for Comments: 3332 Signatus Technologies Category: Standards Track K. Morneault Cisco ...
https://app.kbone.net/vault/rfc/docid/4633
RFC4240: Basic Network Media Services with SIP
Network Working Group E. Burger, Ed. Request for Comments: 4240 J. Van Dyke Category: Informational A. Spitzer Brooktrout Technology, Inc. ...