Configuring Voice
Configuring Voice Settings
174
Cisco SRP500 Series Services Ready Platforms Administration Guide (SRP520 Models)
6
DTMF Tx Mode
DTMF Detection Tx Mode is available for SIP
information and AVT. Options are:
Strict
or
Normal
.
The default is Strict
for which the following are true:
•
A DTMF digit requires an extra hold time after
detection.
•
The DTMF level threshold is raised to -20 dBm.
The minimum and maximum duration thresholds are:
•
strict mode for AVT: 70 ms
•
normal mode for AVT: 40 ms
•
strict mode for SIP info: 90 ms
•
normal mode for SIP info: 50 ms
FAX Process NSE
To use the fax process NSE feature, select
yes
.
Otherwise, select
no
.
The default is yes.
Hook Flash Tx Method
Select the method for signaling hook flash events:
None, AVT, or INFO. None does not signal hook flash
events. AVT uses RFC2833 AVT (event = 16). INFO
uses SIP INFO with the single line signal=hf in the
message body. The MIME type for this message
body is taken from the Hook Flash MIME Type setting.
The default is None.
FAX Disable ECAN
If enabled, this feature automatically disables the
echo canceller when a fax tone is detected. To use
this feature, select
yes
. Otherwise, select
no
.
The default is no
.
Release Unused
Codec
This feature allows the release of codecs not used
after codec negotiation on the first call, so that other
codecs can be used for the second line. To use this
feature, select
yes
. Otherwise, select
no
.
The default is yes.
FAX Enable T38
To enable the use of ITU-T T.38 standard for FAX
Relay, select
yes
. Otherwise select
no
.
The default is yes.
