Cisco SPA232D Administration Manual page 103

Configuring the Voice Settings
Line 1 Settings (PHONE Port)
Cisco SPA232D Administration Guide
Field
NAT Keep Alive
Msg
NAT Keep Alive
Dest
Network Settings
Field
SIP ToS/DiffServ
Value
SIP CoS Value
RTP ToS/DiffServ
Value
RTP CoS Value [0-
7]
Network Jitter
Level
Jitter Buffer
Adjustment
Description
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 setting: $NOTIFY
Destination that should receive NAT keep alive messages.
If the value is $PROXY, the messages are sent to the
current proxy server or outbound proxy server.
Default setting: $PROXY
Description
TOS/DiffServ field value in UDP IP packets carrying a SIP
message.
Default setting: 0x68
CoS value for SIP messages. Valid values are 0 through 7.
Default setting: 3
ToS/DiffServ field value in UDP IP packets carrying RTP
data.
Default setting: 0xb8
CoS value for RTP data. Valid values are 0 through 7.
Default setting: 6
Determines how jitter buffer size is adjusted by the ATA.
Jitter buffer size is adjusted dynamically. The minimum
jitter buffer size is 30 milliseconds or (10 milliseconds +
current RTP frame size), whichever is larger, for all jitter
level settings. However, the starting jitter buffer size value
is larger for higher jitter levels. This setting controls the
rate at which the jitter buffer size is adjusted to reach the
minimum. Select the appropriate setting: low, medium,
high, very high, or extremely high.
Default setting: high
Choose yes to enable or no to disable this feature.
Default setting: yes
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