Operation Manual

Configuring the Voice Settings
Line 1 and Line 2 Settings (PHONE 1 and PHONE 2)
Cisco SPA100 Series Administration Guide 93
1
Audio Configuration
CONFCID Serv Enable Caller ID during conference call.
Default settings: yes
Field 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
• G711a
• G726-32
• G729a
Default setting: G711u.
Second Preferred
Codec
If the first codec fails, then second preferred codec is tried.
Default setting: blank
Third Preferred
Codec
If the second codec fails, then third preferred codec is tried.
Default setting: blank
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.
Default setting: no
Use Remote Pref
Codec
If set to yes, the phone communicates using the remote phone
preferred codec. If set to no, the Cisco IP phone communicates
using its own preferred codec (as indicated in the Preferred Codec
field and in the SDP by order of preferences).
Default setting: no
Codec Negotiation When set to Default, the Cisco IP phone responds to an Invite with
a 200 OK response advertising the preferred codec only. When set
to List All, the Cisco IP phone responds listing all the codecs that
the phone supports.
Default setting: Default
Field Description