Aastra Telecom SIP 57I - Manual (Page 523)

Operational, Basic, and Advanced Parameters
41-001160-00, Release 2.1, Rev 04 A-21
Configuration Parameters
Appendix A
Parameter –
sip nat rtp port
NAT RTP Port
(in Phone UI and Web UI)
IP Phone UI Options->Administrator Menu->
SIP Settings->RTP Port Base
Aastra Web UI Advanced Settings->Network->
Advanced Network Settings
Configuration Files aastra.cfg, <mac>.cfg
Description Indicates the port through which the RTP packets are sent. This value
must specify the beginning of the RTP port range on the gateway or
router.
The RTP port is used for sending DTMF tones and for the audio stream.
Your network administrator may close some ports for security reasons.
You may want to use this parameter to send RTP data using a different
port.
Format Integer
Default Value 51720
Range Not Applicable
Example sip nat rtp port: 51730
Parameter –
sip nortel nat support
Nortel NAT Traversal
Enabled
(in Web UI)
IP phone UI Options->Administrator Menu->SIP Settings
Aastra Web UI Advanced Settings->Network
Configuration Files aastra.cfg, <mac>.cfg
Description Enables or disables the phone to operate while connected to a network
device that enforces NAT.
Format Integer
Default Value 0 (disabled)
Range 0 (disabled)
1 (enabled)
Example sip nortel nat support: 1