Aastra Telecom 41-001343-02 manual SIP Turn Parameters, Example Sip stun port 3478,3479

Operational, Basic, and Advanced Parameters

Parameter –	Configuration Files
sip stun port	aastra.cfg, <model>.cfg, <mac>.cfg
Description	Port number of the STUN server (also know as Simple Traversal of UDP through NAT)
	Notes:
	•	The NAT IP configuration parameter takes precedence over the STUN and TURN
		parameters.
	•	STUN does not work if the NAT device is symmetric.
Format	Integer
Default Value	3478
Range	0 to 65535 (One (1) or two (2) port numbers separated by a comma)
	Note:
	The first is the primary and the second is the backup.
Example	sip stun port: 3478,3479

SIP TURN Parameters

Parameter –	Configuration Files
sip turn ip	aastra.cfg, <model>.cfg, <mac>.cfg
Description	IP address and/or qualified domain name of the TURN server (also known as Traversal
	Using Relay NAT).
	TURN is a protocol that governs the reception of data over a Transmission Control Pro-
	tocol (TCP) or a UDP connection by a single communications device operating behind
	a NAT or firewall. A TURN server relays packets from an external IP address towards an
	internal device only if that internal device has previously sent a packet through the
	same TURN server to that particular external IP address.
	The STUN/TURN configuration is only used for media (RTP traffic) that goes through
	the server - not for signaling. (For signaling, you need to enable Rport if the NAT device
	does not recognized SIP).
	The STUN/TURN configuration applies globally to each phone.
	If you configure both STUN and TURN on the phone, it discovers what type of NAT
	device is between the phone and the public network. If the NAT device is full cone,
	restricted cone, or port restricted cone, the phone uses STUN. If the NAT device is sym-
	metric, the phone uses TURN. If you configure TURN only, the phone uses TURN with
	the NAT discovery process. TURN is compatible with all types of NAT devices but can be
	costly since all traffic goes through a media relay (which can be slow, can exchange
	more messages, and requires the TURN server to allocate bandwidth for calls).
	Note:
	The NAT IP configuration parameter takes precedence over the STUN and TURN
	parameters.
Format	IP Address or Fully Qualified Domain Name (FQDN)
Default Value	0.0.0.0
Range	Two (2) IP addresses or domain names separated by a comma
	Note:
	The first is the primary and the second is the backup.
Example	sip turn ip: 10.50.103.12, turnbackup.aastra.com

41-001343-02 REV04 – 05.2014 A-28