Yealink SIP-T54S Administrator's Manual page 414

Administrator's Guide for SIP-T2 Series/T19(P) E2/T4 Series/T5 Series/CP860/CP920 IP Phones
Note: It works only if the value of the parameter "account.X.auto_answer" is set to 1
(Enabled). It is not applicable to CP860 IP phones.
Web User Interface:
None
Phone User Interface:
None
features.auto_answer_delay
Description:
Configures the delay time (in seconds) before the IP phone automatically answers an
incoming call.
Note: For the call coming from a SIP account, it works only if the value of the parameter
"account.X.auto_answer" is set to 1 (Enabled). For the call coming from a PSTN account, it
works only if the value of the parameter "pstn.account.X.auto_answer" is set to 1 (Enabled).
Web User Interface:
Features->General Information->Auto Answer Delay(1~4s)
Phone User Interface:
None
features.auto_answer_tone.enable
Description:
Enables or disables the phone to play a warning tone when an incoming call is
automatically answered.
0-Disabled
1-Enabled
Note: For the call coming from a SIP account, it works only if the value of the parameter
"account.X.auto_answer" is set to 1 (Enabled). For the call coming from a PSTN account, it
works only if the value of the parameter "pstn.account.X.auto_answer" is set to 1 (Enabled).
It is also applicable to IP calls.
Web User Interface:
Features->General Information->Enable Auto Answer Tone
Phone User Interface:
None
features.mute.autoanswer_mute.enable
388
Parameters Permitted Values
Integer from 1 to 4
0 or 1
0 or 1
Default
1
1
1