AudioCodes Mediant 500 MSBR, User Manual

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Version 7.2 1103 Mediant 500 MSBR
User's Manual 74. Configuration Parameters Reference
Line Transfer Mode
configure voip > gateway
voice-mail-setting > line-
transfer-mode
[LineTransferMode]
Defines the call transfer method used by the device. The parameter is
applicable to the following:

Analog interfaces: FXO call transfer

Digital interfaces: E1/T1 CAS call transfer if the
TrunkTransferMode_x parameter is set to 3 (CAS Normal) or 1
(CAS NFA)
The valid values are:

[0] None = (Default) IP.

[1] Blind = PBX blind transfer:

Analog (FXO): After receiving a SIP REFER message from the
IP side, the device (FXO) sends a hook-flash to the PBX, dials
the digits (that are received in the Refer-To header), and then
immediately releases the line (i.e., on-hook). The PBX
performs the transfer internally.

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:

Analog (FXO): After receiving a SIP REFER message from the
IP side, the device sends a hook-flash to the PBX, and then
dials the digits (that are received in the Refer-To header). If no
busy or reorder tones are detected (within the user-defined
interval set by the WaitForBusyTime parameter), the device
completes the call transfer by releasing the line. If these tones
are detected, the transfer is cancelled, the device sends a SIP
NOTIFY message with a failure reason in the NOTIFY body
(such as 486 if busy tone detected), and generates an
additional hook-flash toward the FXO line to restore
connection to the original call.

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:

Analog (FXO): After receiving a SIP REFER message from the
IP side, the device sends a hook-flash to the PBX, and then
dials the digits (that are received in the Refer-To header). The
device waits for connection of the transferred call and then
completes the call transfer by releasing the line. If speech is
not detected, the transfer is cancelled, the device sends a SIP
NOTIFY message with a failure reason in the NOTIFY body
(such as 486 if busy tone detected) and generates an
additional hook-flash toward the FXO line to restore
connection to the original call.

E1/T1 CAS: The device performs a supervised transfer to the