Cisco SPA942 - Cisco - IP Phone User Manual

Configuring Security, Quality, and Network Features
Configuring Voice Codecs
124 Cisco SPA and Wireless IP Phone Administration Guide
6
Parameter Description
Preferred Codec Preferred codec for all calls. (The actual codec used in a call
still depends on the outcome of the codec negotiation
protocol.) Select one of the following:
• G711u (all models)
• G711a (all models)
• G726-16 (not supported on WIP310, SPA525G)
• G726-24 (not supported on WIP310, SPA525G)
• G726-32
• G726-40 (not supported on WIP310, SPA525G)
• G729a
• G723 (not supported on WIP310, SPA525G)
• G722 (SPA525G)
See “Supported Codecs” section on page 118.
Defaults to G711u.
Use Pref Codec
Only
To use only the preferred codec for all calls, select yes. (The
call fails if the far end does not support this codec.) Otherwise,
select no.
Defaults to no.
Second Preferred
Codec
If the first codec fails, this codec is tried.
Defaults to unspecified.
NOTE: Not applicable to the WIP310.
Third Preferred
Codec
If the second codec fails, this codec is tried.
Defaults to unspecified.
NOTE: Not applicable to the WIP310.
G729a Enable To enable the use of the G.729a codec at 8 kbps, select yes.
Otherwise, select no.
Defaults to yes.

Cisco SPA942 - Cisco - IP Phone Specifications

General

Brand	Cisco
Model	SPA942 - Cisco - IP Phone
Category	IP Phone
Language	English