Cisco SPA303 Administration Manual page 139

Configuring Security, Quality, and Network Features
Configuring Voice Codecs
STEP 1
STEP 2
STEP 3
STEP 4
Cisco Small Business SPA300 Series, SPA500 Series, and WIP310 IP Phone Administration Guide
To configure the voice codecs on each extension:
Log in to the configuration utility.
Click Admin Login and advanced.
Click the Ext <number> tab for the extension you want to configure.
Under Audio Configuration, configure the following parameters:
Parameter
Preferred Codec
Use Pref Codec
Only
Second Preferred
Codec
Description
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/525G2)
•
G726-24 (not supported on WIP310, SPA525G/525G2)
•
G726-32
•
G726-40 (not supported on WIP310, SPA525G/525G2)
•
G729a
•
G723 (not supported on WIP310, SPA525G/525G2)
•
G722 (not supported on WIP310)
See "Supported Codecs" section on page
Defaults to G711u.
To use only the preferred codecs for all calls, select yes. (The
call fails if the far end does not support these codecs.)
Otherwise, select no.
Defaults to no.
If the first codec fails, this codec is tried.
Defaults to unspecified.
NOTE Not applicable to the WIP310.
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