A100K10333 v.5.5
Configuration Guide
Page 19
AudioCodes
MP-114/118
6.3 M-key Control from Telephone Network
The ‘
¿
’ and ‘#’ buttons on the telephone can be used to control M-key
function (simplex audio) ON or OFF:
z
Press the ‘
¿
’-key briefly and the M-key is turned ON
z
Press the ‘#’-key briefly and the M-key is turned OFF
This can be useful for group call announcement from the telephone.
The feature is enabled by setting
1
st
Tx DTMF Option
to
INFO(Cisco)
in
Protocol Management > Protocol Definition > DTMF & Dialing
.
6.4 Transmit ‘
¿
’ and ‘#’ from AlphaCom
The DTMF signals ‘
¿
’ and ‘#’ will be transmitted to the line when DAK 0
(
¿
) and DAK 1 (#) is pressed during a telephone conversation. No
programming is required.
6.5 Voice Switching in Noisy Environment
If the intercom station is located in a noisy environment, it might be
difficult to switch the voice direction from the telephone towards the
intercom station. However, there is a setting in the AlphaCom to
overcome this problem. In AlphaPro,
Exchange & System
>
System
>
VoIP
, set the parameter
Optimized voice duplex control when
conversation with SIP trunk/stations
When this flag is set, the initial voice direction is forced to be from the
intercom towards the telephone. When the phone operator starts to
speak, the voice direction will switch towards the intercom station,
regardless of the level of the audio signal from the intercom station. As
soon as the phone operator stops speaking, the voice direction will
switch back to the initial direction.
Make sure that the
Echo Canceller
is enabled in the SIP Gateway.
(
Configuration
tab >
Media Settings
menu >
Voice Settings
page
item >
Echo Canceller
= Enabled).
6.6 Country Settings
The Line Characteristics (AC impedance matching, hybrid balance, Tx &
Rx frequency response, Tx & Rx Gains, ring detection threshold, DC
characteristics) should be set according to country of origin.
Some of the SIP Gateway parameters are configurable through the
ini
configuration file only (and not via the Web). The
CountryCoefficients
parameter that determines the line characteristics must be configured
via the
ini
configuration file.
;
Procedure to modify the
ini
file:
