Aastra Telecom SIP 57I - Manual (Page 678)

Advanced Operational Parameters
A-176 41-001160-00, Release 2.1, Rev 04
IP Phone Administrator Guide
Appendix A
Symmetric UDP Signaling Setting
User-Agent Setting
Parameter –
sip symmetric udp signaling Configuration Files aastra.cfg, <mac>.cfg
Description Allows you to enable or disable the phone to use port 5060 to send SIP
UDP messages. The value “1” (which is the default) enables the phone
to use port 5060. The value “0” (zero) disables the phone from using
port 5060 and allows the phone to choose a random port to send SIP
UDP messages.
Format Boolean
Default Value 1 (enabled)
Range 0 (disabled)
1 (enabled)
Example sip symmetric udp signaling: 0
Parameter –
sip user-agent Configuration Files aastra.cfg, <mac>.cfg
Description Allows you to enable or disable the addition of the User-Agent and
Server SIP headers in the SIP stack.
The value of “0” prevents the UserAgent and Server SIP header from
being added to the SIP stack. The value of “1” allows these headers to
be added.
Format Boolean
Default Value 1 (true)
Range 0 (false)
1 (true)
Example sip user-agent: 0