Operational, Basic, and Advanced Parameters
41-001343-02 REV04 – 05.2014 A-26
Rport Setting
Local SIP UDP/TCP Port Setting
Parameter –
sip rport
Configuration Files
aastra.cfg, <model>.cfg, <mac>.cfg
Description Allows you to enable (1) or disable (0) the use of Rport on the IP phone.
“Rport” in RFC 3581, allows a client to request that the server send the response back
to the source IP address and the port from which the request came.
Note:
Configuring the Rport parameter is recommended for clients behind a Network
Address Translation (NAT) or firewall.
Format Boolean
Default Value 0
Range 0 (disable)
1 (enable)
Example sip rport: 1
Parameter –
sip local port
Configuration Files
aastra.cfg, <model>.cfg, <mac>.cfg
Description Specifies the local source port (UDP/TCP) from which the phone sends SIP messages.
Format Numeric
Default Value 5060
Range Greater than 1024 and less than 65535
Notes:
• It is recommended that you avoid the conflict RTP port range in case of a UDP trans-
port.
• By default, the IP phones use symmetric UDP signaling for outgoing UDP SIP mes-
sages. When symmetric UDP is enabled, the IP phone generates and listens for UDP
messages using port 5060.If symmetric UDP signaling is disabled, the phone sends
from random ports but it listens on the configured SIP local port.
Example sip local port: 5060
