Yealink SIP-T48G Administrator's Manual page 223

answer forward settings.
The call forward on code and call forward off code configured on IP phones are used to
activate/deactivate the server-side call forward feature. They may vary on different
servers.
IP phones support the redirected call information sent by the SIP server with Diversion
header, per draft-levy-sip-diversion-08, or History-info header, per RFC 4244. The
Diversion/History-info header is used to inform the IP phone of a call's history. For
example, when a phone has been set to enable call forward, the Diversion/History-info
header allows the receiving phone to indicate who the call was from, and from which
phone number it was forwarded.
Forward International
Forward international allows users to forward an incoming call to an international
telephone number. This feature is enabled by default.
Procedure
Call forward can be configured using the configuration files or locally.
Configuration File
Configure call forward in custom
mode.
Parameters:
account.X.always_fwd.enable
account.X.always_fwd.target
account.X.always_fwd.on_code
account.X.always_fwd.off_code
account.X.busy_fwd.enable
<MAC>.cfg
account.X.busy_fwd.target
account.X.busy_fwd.on_code
account.X.busy_fwd.off_code
account.X.timeout_fwd.enable
account.X.timeout_fwd.target
account.X.timeout_fwd.timeout
account.X.timeout_fwd.on_code
account.X.timeout_fwd.off_code
Configure the call forward mode.
Parameter:
<y0000000000xx
features.fwd_mode
>.cfg
Configure call forward in phone
mode.
Configuring Basic Features
209