Cisco SPA 500 Series and Wireless IP Phone Field Reference
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Cisco SPA 500 Series and WIP310 IP Phone Administration Guide
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NAT Settings
Network Settings
Parameter
Description
NAT Mapping Enable
To use externally mapped IP addresses and SIP/RTP
ports in SIP messages, select yes. Otherwise, select
no.
Defaults to no.
NAT Keep Alive Enable
To send the configured NAT keep alive message
periodically, select yes. Otherwise, select no.
Defaults to no.
NAT Keep Alive Msg
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.
Defaults to $NOTIFY.
NAT Keep Alive Dest
Destination that should receive NAT keep alive
messages. If the value is $PROXY, the messages are
sent to the current or outbound proxy.
Defaults to $PROXY.
Parameter
Description
SIP TOS/DiffServ Value
TOS/DiffServ field value in UDP IP packets carrying a
SIP message.
Defaults to 0x68.
SIP CoS Value
CoS value for SIP messages.
Defaults to 3.