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Configuring the Voice Settings
Line1 Settings (PHONE Port)
Cisco SPA232D Administration Guide 102
4
Network Settings
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.
Default setting: $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 proxy server or outbound proxy server.
Default setting: $PROXY
Field Description
SIP ToS/DiffServ
Value
TOS/DiffServ field value in UDP IP packets carrying a SIP
message.
Default setting: 0x68
SIP CoS Value CoS value for SIP messages. Valid values are 0 through 7.
Default setting: 3
RTP ToS/DiffServ
Value
ToS/DiffServ field value in UDP IP packets carrying RTP
data.
Default setting: 0xb8
RTP CoS Value [0-
7]
CoS value for RTP data. Valid values are 0 through 7.
Default setting: 6
Network Jitter
Level
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
Jitter Buffer
Adjustment
Choose yes to enable or no to disable this feature.
Default setting: yes
Field Description