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ATA Voice Field Reference
PSTN Line page (SPA3102)
ATA Administration Guide 192
B
Voice tab > PSTN Line page >
Network Settings section
NAT Keep Alive
Enable
To send the configured NAT keep alive message
periodically, select yes. Otherwise, select no.
The default is 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.
Escape sequence of %xx is also accepted. For example,
%0d%0a is unescaped into \r\n (CRLF).
The default is $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.
The default is $PROXY.
SIP ToS/DiffServ
Value
TOS/DiffServ field value in UDP IP packets carrying a SIP
message.
The default is 0x68.
SIP CoS Value [0-7] CoS value for SIP messages.
The default is 3.
RTP ToS/DiffServ
Value
ToS/DiffServ field value in UDP IP packets carrying RTP
data.
The default is 0xb8.
RTP CoS Value [0-
7]
CoS value for RTP data.
The default is 6.