Aastra Telecom SISIP 57I CT - Manual (Page 495)

Sample Configuration Files
41-001160-00, Rev 01 Release 2.0 D-5
Sample Configuration Files
Appendix D
# NAT device between the server and the phone, then you must set the
# following two parameters for the phone to function correctly.
#sip nortel nat support: 1 # 1 = enabled
#sip nortel nat timer: 60 # seconds between keep alive messages
# Option 2:
#
# If you are using a session border controller, you should set the
# outbound proxy to the session border controller address
#sip outbound proxy: sbc.aastra.com
#sip outbound proxy port: 0 # a value of 0 enables SRV
# lookups for the address of
# the proxy.
# Option 3:
#
# If you know the public IP address of your NAT device and and have
# opened up a port for the SIP messages then you can statically
# assign this information.
#sip nat ip: 67.123.122.90
#sip nat port: 5890
# Additional Network Settings
# =============================
#sip rtp port: 3000 # Eg. RTP packets are sent to port 3000.
#-------------------------------------------------------------------
# Configuration Server Settings