Yealink SIP-T4X Administrator's Manual page 302

Administrator's Guide for SIP-T4X IP Phones
Format
Default Value
Range
Example
Parameter-
auto_redial.enable
Description
Format
Default Value
Range
Example
Parameter-
auto_redial.interval
Description
286
If it is set to 1 (Enabled), the IP phone will play
a tone when receiving a new incoming call
during a call.
Note: It works only if the parameter
―call_waiting.enable‖ is set to 1 (Enabled).
Boolean
1
Valid values are:
0-Disabled
1-Enabled
call_waiting.tone = 1
Configuration File
<y0000000000xx>.cfg
Enables or disables the IP phone to
automatically redial the called number when it
is busy.
If it is set to 1 (Enabled), the IP phone will dial
the previous dialed out number automatically
when the dialed number is busy.
Boolean
0
Valid values are:
0-Disabled
1-Enabled
auto_redial.enable = 1
Configuration File
<y0000000000xx>.cfg
Configures the interval (in seconds) for the IP
phone to wait between redials.
The IP phone redials the dialed number at
regular intervals till the callee answers the
call.