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Cisco SIP IP Phone Administrator Guide
Chapter 3 Managing Cisco SIP IP Phones
Modifying the Phone’s SIP Settings
outbound_proxy_port
Optional
The port number of the outbound proxy server. The
default is 5060. When outbound proxy is enabled, all SIP
requests are sent to the outbound proxy server instead of
the proxyN_address. All responses continue to follow
the using the normal Via processing rules. The media
stream is not routed through the outbound proxy.
NAT and outbound proxy modes can be independently
enabled or disabled. The received= tag is added to the
Via header of all responses if there is no received= tag in
the uppermost Via header and if the source IP address is
different from the IP address in the uppermost Via
header. Responses are sent back to the source under the
following conditions:
•
If a received= tag is in the uppermost Via header, the
response is sent back to the IP address contained in
the received= tag.
•
If there is no received= tag and the IP address in the
uppermost Via header is different than the source
IP address, the response is sent back to the source IP.
Otherwise, the response is sent back to the
IP address in the uppermost Via header.
phone_password
Optional
Password to be used for console or Telnet access. The
default password is “cisco.”
phone_prompt
Optional
Prompt to be displayed when using Telnet or console
access. The default phone prompt is “SIP Phone.”
preferred_codec
Optional
Codec to use when initiating a call. Valid values are
g711alaw, g711ulaw, and g729a. The default is
g711ulaw.
proxy_backup
Optional
IP address of the backup proxy server or gateway. Enter
this address in IP dotted-decimal notation.
proxy_backup_port
Optional
Port number of the backup proxy server. Default is 5060.
proxy_emergency
Optional
IP address of the emergency proxy server or gateway.
Enter this address in IP dotted-decimal notation.
proxy_emergency_port
Optional
Port number of the emergency proxy server. Default is
5060.
Table 3-3
Default SIP Configuration File Parameters (continued)
Parameter
Required or
Optional
Description