Administrator’s Guide for W80 DECT IP Multi-Cell System
204
Call Transfer
Call transfer enables the phones to transfer an existing call to a third party. For example, if party A is in an active call
with party B, party A can transfer this call to party C (the third party). Then, party B will begin a new call with party C,
and party A will disconnect.
Yealink phones support call transfer using the REFER method specified in
and offer three types of trans-
fer:
l
Blind Transfer
-- Transfer a call directly to another party without consulting. Blind transfer is implemented by a
simple REFER method without Replaces in the Refer-To header.
l
Semi-attended Transfer
-- Transfer a call after hearing the ringback tone. The semi-attended transfer is imple-
mented by a REFER method with Replaces in the Refer-To header.
The semi-attended transfer is applicable to that when users do not want to consult with the third party after hear-
ing the ringback tone, and the third party has not answered the call, the users can cancel the transfer or imple-
ment the transfer.
l
Attended Transfer (Consultative Transfer)
-- Transfer a call with prior consulting. Attended transfer is imple-
mented by a REFER method with Replaces in the Refer-To header.
Topic
Call Transfer Configuration
The following table lists the parameters you can use to configure call transfer.
Parameter
transfer.semi_attend_tran_enable
<y0000000000xx>.cfg
Description
It enables or disables the semi-attended transfer.
Permitted
Values
0
-Disabled, when the user the TRAN key after hearing the ringback tone, the phone will blind transfer
the call.
1
-Enabled, when the user the TRAN key after hearing the ringback tone, the phone will transfer the
call after the transferee answers the call.
Default
1
Web UI
Features > Transfer > Semi-Attended Transfer
Parameter
account.X.transfer_refer_to_contact_head-
er.enable
[1]
<MAC>.cfg
Description
It enables or disables the Refer-To header to use the information of the Contact header in the second
200 OK message when attended transfer.
Permitted
Values
0
-Disabled
1
-Enabled
Default
0
Parameter
transfer.blind_tran_on_hook_enable
<y0000000000xx>.cfg
Description
It enables or disables the phone to complete the blind transfer through on-hook besides the TRAN
key.
Note
: Blind transfer means transferring a call directly to another party without consulting.
Permitted
Values
0
-Disabled
1
-Enabled
Default
1