Yealink SIP-T54S Administrator's Manual page 507

For CP920 IP Phones, tap
Procedure
Allow trans exist call can be configured using the following methods.
Central Provisioning
(Configuration File)
Web User Interface
Details of Configuration Parameter:
Parameter
transfer.multi_call_trans_enable
Description:
Enables or disables the IP phone to select transfer-to party's call (a new call or another
existing call) during multiple calls when user presses the Trans/Transfer soft key or
TRAN/TRANSFER key.
0-Disabled
1-Enabled
If it is set to 1 (Enabled), the user can select to transfer the active call to a new call or
another existing call during multiple calls when the user presses the Trans/Transfer soft
key or TRAN/TRANSFER key.
If it is set to 0 (Disabled), the user can transfer the active call to a new call during multiple
calls when the user presses the Trans/Transfer soft key or TRAN/TRANSFER key.
Note: It is not applicable to SIP-T54S/T52S/T48G/T48S/T46G/T46S/T29G/CP920 IP phones.
Allow trans exist call is enabled on CP920 IP phones by default. You are not allowed to
configure this parameter for these IP phones.
Web User Interface:
Features->General Information->Allow Trans Exist Call
to select the hold party you want to transfer to.
Configure allow trans exist call.
<y0000000000xx>.
Parameter:
cfg
transfer.multi_call_trans_enable
Configure allow trans exist call.
Navigate to:
http://<phoneIPAddress>/servlet?p=fea
tures-general&q=load
Configuring Basic Features
Permitted Values
0 or 1
Default
1
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