Dial Plan - Cisco SPA942 - - IP Phone Administration Manual

SPA and Wireless IP Phone Field Reference
Ext Tab
Cisco SPA and Wireless IP Phone Administration Guide
Parameter
Silence Supp Enable
DTMF Tx Method
A codec resource is considered allocated if it has been included in the SDP codec
list of an active call, even though it eventually might not be chosen for the
connection. If the G.729a codec is enabled and included in the codec list, that
resource is tied up until the end of the call whether or not the call actually uses
G.729a. If the G729a resource is already allocated (and since only one G.729a
resource is allowed per phone), no other low-bit-rate codec can be allocated for
subsequent calls. The only choices are G711a and G711u.
Since two G.723. 1 /G.726 resources are available per SPA9X2, you should disable
the use of G.729a to guarantee support for two simultaneous G.723/G.726
codecs.

Dial Plan

The default dial plan script for each line is as follows: (*xx|[3469]11|0|00|[2-
9]xxxxxx| 1 xxx[2-9]xxxxxx| x xxxxxxxxxxx.).
Description
To enable silence suppression so that silent audio
frames are not transmitted, select yes. Otherwise,
select no.
Defaults to no.
Select the method to transmit DTMF signals to the far
end: InBand, AVT, INFO, Auto, InBand+INFO, or
AVT+INFO. InBand sends DTMF using the audio path.
AVT sends DTMF as AVT events. INFO uses the SIP
INFO method. Auto uses InBand or AVT based on the
outcome of codec negotiation.
Defaults to Auto.
B
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