Yealink SIP-T48G Administrator's Manual page 231

Parameters
Description:
Configures the no answer forward off code to deactivate the server-side no answer
forward feature for account X when the call forward mode is configured as Custom.
The IP phone will send the no answer forward off code to the server when you
deactivate no answer forward feature for account X on the IP phone.
X ranges from 1 to 16 (for SIP-T48G/T46G/T29G).
X ranges from 1 to 12 (for SIP-T42G).
X ranges from 1 to 6 (for SIP-T41P/T27P).
X ranges from 1 to 3 (for SIP-T23P/G).
X ranges from 1 to 2 (for SIP-T21(P) E2).
Example:
account.1.timeout_fwd.off_code = *77
Web User Interface:
Features->Forward& DND->Forward->No Answer Forward ->Off Code
Phone User Interface:
Menu->Features->Call Forward->No Answer Forward->Off Code
features.fwd_mode
Description:
Configures the call forward mode for the IP phone.
0-Phone
1-Custom
If it is set to 0 (Phone), call forward feature is effective for the IP phone.
If it is set to 1 (Custom), you can configure call forward feature for each account.
Web User Interface:
Features->Forward&DND->Forward->Forward->Mode
Phone User Interface:
None
forward.always.enable
Configuring Basic Features
Permitted Values
0 or 1
0 or 1
Default
0
0
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