Cisco 7800 Series Administration Manual page 293

Cisco IP Phone Troubleshooting
Parameter
Subscription Expires
Restrict MWI
NAT Settings
Parameter
NAT Mapping Enable
NAT Keep Alive Enable
NAT Keep Alive Msg
NAT Keep Alive Dest
Network Settings
Parameter
SIP TOS/DiffServ Value
RTP ToS/DiffServ Value
Description
Number of seconds before the SIP subscription
expires. Before the subscription expiration, the phone
gets NOTIFY messages from the SIP server on the
status of the shared phone extension.
Default: 3600
When enabled, the message waiting indicator lights
only for messages on private lines.
Default: No
Description
To use externally mapped IP addresses and SIP/ RTP
ports in SIP messages, select yes. Otherwise, select
no.
Default: No
To send the configured NAT keep alive message
periodically, select yes. Otherwise, select no.
Default: No
Enter the keep alive message that should be sent
periodically to maintain the current NAT mapping. If
the value is $NOTIFY, a NOTIFY message is sent.
If the value is $REGISTER, a REGISTER message
without contact is sent.
Default: $NOTIFY
Destination that should receive NAT keep alive
messages. If the value is $PROXY, the messages are
sent to the current or outbound proxy.
Description
Time of service (ToS)/differentiated services
(DiffServ) field value in UDP IP packets carrying a
SIP message. Default: 0x68.
Value for the ToS field of voice data packets.
Sets the priority for voice packets in data traffic.
Default: 0xb8.
Cisco IP Phone 7800 Series Multiplatform Phones Administration Guide
NAT Settings
279