Cisco SPA301 Administration Manual page 344

Cisco SPA IP Phone Field Reference
Ext Tab
Cisco Small Business SPA300 Series, SPA500 Series, and WIP310 IP Phone Administration Guide
Parameter
Preferred Codec
Use Pref Codec Only
Second Preferred
Codec
Third Preferred Codec
G711u Enable
G711a Enable
G729a Enable
G722 Enable
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, G711a, G722, G726-16, G726-24, G726-32,
G726-40, G729a, or G723.
Cisco SPA525G or Cisco SPA525G2: G711u, G711a,
G726-32, G729a, and G722. G.723 (not available on
Cisco SPA300 Series or Cisco SPA500 Series). G722
not available on Cisco WIP310.
Defaults to G711u.
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.
The second preferred codec when the preferred
codec cannot be used. If
enabled (set to yes), this parameter is not used.
Defaults to Unspecified.
The third preferred codec when the preferred codec
and second preferred codec cannot be used. If
Pref Codec Only i s enabled (set to yes), this parameter
is not used.
Defaults to Unspecified.
Enables use of the G711u codec. Defaults to yes.
Enables use of the G711a codec. Defaults to yes.
To enable the use of the G.729a codec at 8 kbps,
select yes. Otherwise, select no.
Defaults to yes.
Enables use of the G.722 codec. Defaults to yes.
NOTE Not applicable to the
Use Pref Codec Only i
Cisco WIP310
.
A
s
Use
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