Sip Settings - Cisco Small Business SPA509G Administration Manual

Cisco SPA IP Phone Field Reference
Ext Tab
Cisco Small Business SPA300 Series, SPA500 Series, and WIP310 IP Phone Administration Guide
Parameter
RTP TOS/DiffServ Value
RTP CoS Value
Network Jitter Level
Jitter Buffer Adjustment

SIP Settings

Parameter
SIP Transport
SIP Port
Description
ToS/DiffServ field value in UDP IP packets carrying
RTP data.
Defaults to 0xb8.
CoS value for RTP data.
Defaults to 6.
Determines how jitter buffer size is adjusted by the
SPA9000. 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.
Defaults to high.
Controls how the jitter buffer should be adjusted.
Select the appropriate setting: up and down, up only,
down only, or disable.
Defaults to up and down.
Description
Select from UDP, TCP, or TLS.
Defaults to UDP.
Port number of the SIP message listening and
transmission port.
Defaults to 5060.
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