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Aastra CNX software
ATP-CNX-040-01 Rel. 1.3, Doc. Rev. 01.07 2-9
About the Aastra CNX
• Network Information Service (NIS) for integration with Unix and Linux
servers
• Simple Mail Transfer Protocol (SMTP) for integration with email systems
When using H.323, the Aastra CNX functions as a terminal appearing as a peer to
H.323-based IP phones. You can configure the Aastra CNX to work with one or
more H.323 gatekeepers.
When using SIP, the Aastra CNX functions as a SIP user-agent. You can configure
the Aastra CNX to work with one or more SIP proxies which may be acting as an
IP PBX. The Aastra CNX conforms to the following RFCs:
• RFC 3261, Session Initiation Protocol
• RFC 3262, Reliability of Provisional Responses in the Session Initiation
Protocol
• RFC 2327, Session Description Protocol
• RFC 2806, URLs for Telephone Calls
The Aastra CNX receives audio streams for VoIP connections over RTP on top of
User Datagram Protocol (UDP), with RTCP providing periodic reports on the
reception of the audio stream. The Aastra CNX conforms to the following RTP
RFCs:
• RFC 3550, RTP: A Transport Protocol for Real-Time Applications
• RFC 2833, RTP Payload for DTMF Digits, Telephony Tones and Telephony
Signals