AudioCodes Mediant 800 MSBG User Manual page 771

SIP User's Manual
Parameter
Web: Transfer Prefix
EMS: Logical Prefix For Transferred
Call
[xferPrefix]
Web: Transfer Prefix IP 2 Tel
[XferPrefixIP2Tel]
Web/EMS: Enable Semi-Attended
Transfer
[EnableSemiAttendedTransfer]
[KeyBlindTransfer]
Version 6.2
Defines the string that is added as a prefix to the
transferred/forwarded called number when the REFER/3xx
message is received.
Notes:
The number manipulation rules apply to the user part of the
Refer-To and/or Contact URI before it is sent in the INVITE
message.
This parameter can be used to apply different manipulation
rules to differentiate transferred/forwarded (only for analog
interfaces) number from the originally dialed number.
Defines the prefix that is added to the destination number
received in the SIP Refer-To header (for IP-to-Tel calls). This
parameter is applicable to FXO/CAS Blind Transfer modes
(LineTransferMode = 1, 2 or 3 for FXO; TrunkTransferMode =
3 for CAS).
The valid range is a string of up to 9 characters. The default is
an empty string.
Note: This parameter is also applicable to ISDN Blind
Transfer, according to AT&T Toll Free Transfer Connect
Service (TR 50075) "Courtesy Transfer-Human-No Data". To
support this transfer mode, you need to configure the
parameter XferPrefixIP2Tel to "*8" and the parameter
TrunkTransferMode to 5.
Determines the device behavior when Transfer is initiated
while in Alerting state.
[0] Disable = Send REFER with the Replaces header
(default).
[1] Enable = Send CANCEL, and after a 487 response is
received, send REFER without the Replaces header.
Keypad sequence that activates blind transfer for Tel-to-IP
calls. There are two possible scenarios:
Option 1: After this sequence is dialed, the current call is
put on hold (using Re-INVITE), a dial tone is played to the
B-channel, and then phone number collection starts.
Option 2: A Hook-Flash is pressed, the current call is put
on hold, a dial tone is played to the B-channel, and then
digit collection starts. After this sequence is identified, the
device continues the collection of the destination phone
number.
For both options, after the phone number is collected, it's sent
to the transferee in a SIP REFER request (without a Replaces
header). The call is then terminated and a confirmation tone is
played to the B-channel. If the phone number collection fails
due to a mismatch, a reorder tone is played to the B-channel.
Note: It is possible to configure whether the KeyBlindTransfer
code is added as a prefix to the dialed destination number, by
using the parameter KeyBlindTransferAddPrefix.
771
12. Configuration Parameters Reference
Description
February 2011