AudioCodes Mediant 500 E-SBC User Manual page 780

Parameter
[WaitForBusyTime]
Web/EMS: Line Transfer Mode
CLI: line-transfer-mode
[LineTransferMode]
SMDI Parameters
User's Manual
Others
If the device receives a Request-URI that includes a 'target' and
'cause' parameter, the 'target' is mapped to the Redirect phone
number and the 'cause' is mapped to the Redirect number reason.
Defines the time (in msec) that the device waits to detect busy
and/or reorder tones. This feature is used for semi-supervised PBX
call transfers (i.e., the LineTransferMode parameter is set to 2).
The valid value range is 0 to 20000 (i.e., 20 sec). The default is
2000 (i.e., 2 sec).
Defines the call transfer method used by the device. This
parameter is applicable to E1/T1 CAS call transfer if the
TrunkTransferMode_x parameter is set to 3 (CAS Normal) or 1
(CAS NFA).

[0] None = (Default) IP.

[1] Blind = PBX blind transfer:

E1/T1 CAS: When a SIP REFER message is received, the
device performs a blind transfer, by performing a CAS wink,
waiting a user-defined time (configured by the
WaitForDialTime parameter), dialing the Refer-To number,
and then releasing the call. The PBX performs the transfer
internally.

[2] Semi Supervised = PBX semi-supervised transfer:

E1/T1 CAS: The device performs a CAS wink, waits a user-
defined time (configured by the WaitForDialTime
parameter), and then dials the Refer-To number. If during
the user-defined interval set by the WaitForBusyTime
parameter, no busy or reorder tones are detected, the
device completes the call transfer by releasing the line. If
during this interval, the device detects these tones, the
transfer operation is cancelled, the device sends a SIP
NOTIFY message with a failure reason (e.g., 486 if a busy
tone is detected), and then generates an additional wink
toward the CAS line to restore connection with the original
call.

[3] Supervised = PBX Supervised transfer:

E1/T1 CAS: The device performs a supervised transfer to
the PBX. The device performs a CAS wink, waits a user-
defined time (configured by the WaitForDialTime
parameter), and then dials the Refer-To number. The
device completes the call transfer by releasing the line only
after detection of the transferred party answer. To enable
answer supervision, you also need to do the following:
1) Enable voice detection (i.e., set the
EnableVoiceDetection parameter to 1).
2) Set the EnableDSPIPMDetectors parameter to 1.
3) Install the IPMDetector DSP option Feature License
Key.
780
Description
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Document #: LTRT-10427
Mediant 500 E-SBC