DescriptionParameter
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
Subscription Expires
When enabled, the message waiting indicator lights
only for messages on private lines.
Default: No
Restrict MWI
NAT Settings
DescriptionParameter
To use externally mapped IP addresses and SIP/ RTP
ports in SIP messages, select yes. Otherwise, select
no.
Default: No
NAT Mapping Enable
To send the configured NAT keep alive message
periodically, select yes. Otherwise, select no.
Default: No
NAT Keep Alive Enable
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
NAT Keep Alive Msg
Destination that should receive NAT keep alive
messages. If the value is $PROXY, the messages are
sent to the current or outbound proxy.
NAT Keep Alive Dest
Network Settings
DescriptionParameter
Time of service (ToS)/differentiated services
(DiffServ) field value in UDP IP packets carrying a
SIP message. Default: 0x68.
SIP TOS/DiffServ Value
Value for the ToS field of voice data packets.
Sets the priority for voice packets in data traffic.
Default: 0xb8.
RTP ToS/DiffServ Value
Cisco IP Phone 7800 Series Multiplatform Phones Administration Guide
279
Cisco IP Phone Troubleshooting
NAT Settings
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