Version 5.8 293 September 2009
SIP User's Manual 6. Configuration Parameters Reference
6.8.2 Call Waiting Parameters
The call waiting parameters are described in the table below.
Table 6-34: Call Waiting Parameters
Parameter Description
Web/EMS: Enable Call Waiting
[EnableCallWaiting]
Determines whether Call Waiting is enabled.
[0] Disable = Disable the Call Waiting service.
[1] Enable = Enable the Call Waiting service (default).
If enabled, when an FXS interface receives a call on a busy
endpoint, it responds with a 182 response (and not with a 486
busy). The device plays a call waiting indication signal. When
hook-flash is detected, the device switches to the waiting call.
The device that initiated the waiting call plays a Call Waiting
Ringback tone to the calling party after a 182 response is
received.
Notes:
The device's Call Progress Tones (CPT) file must include a
Call Waiting Ringback tone (caller side) and a Call Waiting
tone (called side, FXS only).
The EnableHold parameter must be enabled on both the
calling and the called side.
You can use the ini file table parameter CallWaitingPerPort
to enable Call Waiting per port.
For information on the Call Waiting feature, refer to ''Call
Waiting'' on page 427.
For information on the Call Progress Tones file, refer to
Configuring the Call Progress Tones File.
EMS: Send 180 For Call Waiting
[Send180ForCallWaiting]
Determines the SIP response code for indicating call waiting.
[0] = Use 182 Queued response to indicate call waiting
(default).
[1] = Use 180 Ringing response to indicate call waiting.
Call Waiting Table
[CallWaitingPerPort]
This ini file table parameter configures call waiting per FXS
port. The format of this parameter is as follows:
[CallWaitingPerPort]
FORMAT CallWaitingPerPort_Index =
CallWaitingPerPort_IsEnabled;
[\CallWaitingPerPort]
Where,
Index = port number (where 0 denotes Port 1).
IsEnabled:
9 [0] Disable = no call waiting for the specific port.
9 [1] Enable = enables call waiting for the specific port.
When the FXS device receives a call on a busy
endpoint (port), it responds with a SIP 182 response
(and not with a 486 busy). The device plays a call
waiting indication signal. When hook-flash is detected,
the device switches to the waiting call. The device that
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