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Configuring the Voice Settings
PSTN (LINE Port)
Cisco SPA232D Administration Guide 126
4
Network Settings
Incoming Handset
List
The devices that ring when an incoming call is received.
Default setting: fxs,1,2,3,4,5,6,7,8,9,10
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 1 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 CoS value for RTP data. Valid values are 1 through 7.
Default setting: 6
Network Jitter
Level
Determines how jitter buffer size is adjusted by the ATA
device. 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: low
Jitter Buffer
Adjustment
Controls how the jitter buffer should be adjusted. Select
the appropriate setting: up and down, up only, down only,
or disable.
Default setting: yes
Field Description