Cisco 7960G Administrator's Manual page 164

Table D-1
Parameter
nat_enable
nat_received_processing
network_media_type
Cisco SIP IP Phone Administrator Guide, Release 6.x and 7.x
D-10
Configuration File Parameters (continued)
Description
(Optional) Enables NAT.
Valid values are 0 (disable) and 1 (enable). Default is 0.
•
•
(Optional) Enables NAT received processing.
Valid values are 0 (disable) and 1 (enable). Default is 0.
If nat_received_processing is enabled, and the received= tag is in
the Via header of the 200 OK response from a REGISTER, the IP
address in the received= tag is used instead of the nat_address in the
Contact header. If this switch occurs, the phone unregisters the old
IP address and reregisters with the new IP address.
(Optional) Ethernet port negotiation mode.
Valid values are as follows:
•
•
•
•
•
Default is Auto.
Appendix D
If NAT is enabled, the Contact header appears as follows:
Contact: sip:lineN_name@nat_address:voip_control_port
If the nat_address is invalid or UNPROVISIONED, the Contact
header appears as follows:
Contact:
sip:lineN_name@phone_ip_address:voip_control_port
and the Via header appears as follows:
Via: SIP/2.0/UDP phone_ip_address:voip_control_port
If NAT is enabled, the Session Description Protocol (SDP)
message uses the nat_address and an RTP port between the
start_media_port and the end_media_port range in the C and M
fields. All RTP traffic is sourced from the port advertised in the
SDP message.
Auto—Port is autonegotiated.
Full100—Port is configured to be a full-duplex, 100-MB
connection.
Half100—Port is configured to be a half-duplex, 100-MB
connection.
Full10—Port is configured to be a full-duplex, 10-MB
connection.
Half10—Port is configured to be a half-duplex, 10-MB
connection.
Configurable Parameters for the SIP IP Phone