AASTRA 6700i series, 9143, 9480i, 9480i CT SIP Administrator Guide EN - Manual (Page 202)

41-001343-01 Rev 03, Release 3.2.2 4-39
3 In the “STUN Port” field, enter the port number of the STUN server. You can enter up to 2 values
separated by a comma. The first value is the primary and the second value is the backup. For
example:
3478,3479
Default is 3478. Range of values are 0 to 65535.
4 Click to save your changes.
Configure TURN on the IP Phone
5
In the “TURN Server” field, enter the IP address and/or qualified domain name of the TURN server in
your network. You can enter up to 2 values separated by a comma. The first value is the primary and
the second value is the backup. For example:
10.50.103.12, turnbackup.aastra.com.
The 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 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 symmetric, 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.
6 In the “TURN Port” field, enter the port number of the TURN server. You can enter up to 2 values
separated by a comma. The first value is the primary and the second value is the backup. For
example:
3479,3480
Default is 3479. Range of values are 0 to 65535.
7 (Optional) In the “TURN User ID” field, enter the username that a user must enter when accessing an
account on the TURN server. For example, 0412919146.
Valid values are up to 63 alphanumeric characters.
8 (Optional) In the “TURN Password” field, enter the password that a user must enter when accessing
an account on the TURN server. For example, 42447208233b8b8b8a234.
Valid values are up to 63 alphanumeric characters.
9 Click to save your changes.
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