Cisco SIP IP Phone Administrator's Manual page 68

Modifying the Phone's SIP Settings
Table 3-3 Default SIP Configuration File Parameters (continued)
Parameter
nat_received_processing
network_media_type
network_port2_type
outbound_proxy
Cisco SIP IP Phone Administrator Guide
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Required or
Optional Description
Optional Use 0 to disable NAT received processing and 1 to enable
NAT received processing. Default is 0.
If nat_received_processing is enabled, and 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:
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.
The default is Auto.
Optional The device type that is connected to port 2 of the phone.
Valid values are:
Hub/Switch (default)
•
PC
•
Note
Optional The IP address of the outbound proxy server. You can use
either a dotted IP address or a DNS name.
Chapter 3 Managing Cisco SIP IP Phones
If the value is PC, port 2 can be connected only
to a PC. If you are not sure about the connection,
use the default value. Using a value of "PC" and
connecting port 2 to a switch results in spanning
tree loops and network confusion.