Yealink SIP-T54S Administrator's Manual page 857

Auto Answer
If the INVITE request contains the following type of strings, the IP phone will answer incoming
calls automatically without playing the ring tone:
Alert-Info: Auto Answer

Alert-Info: info = alert-autoanswer

Alert-Info: answer-after = 0 (or Alert-Info: Answer-After = 0)

If enable auto answer tone feature is enabled, the phone plays a warning tone to alert the user
before answering the incoming call. For more information on enable auto answer tone, refer to
Auto Answer on page 385.
If the Alert-Info header contains multiple types of keywords, the IP phone will process the
Note
keywords in the following order: AutoAnswer>URL>info text/Bellcore-drN/ringtone-
N>MyMelodyN.
Procedure
Distinctive ring tones can be configured using the following methods.
Central Provisioning
(Configuration File)
Web User Interface
Details of Configuration Parameters:
Configure distinctive ring tones.
<MAC>.cfg
Parameter:
account.X.alert_info_url_enable
Configure the internal ringer text and
internal ringer file.
Parameters:
<y0000000000x
x>.cfg features.alert_info_tone
distinctive_ring_tones.alert_info.X.text
distinctive_ring_tones.alert_info.X.ringer
Configure distinctive ring tones.
Navigate to:
http://<phoneIPAddress>/servlet?m=mod_
data&p=account-adv&q=load&acc=0
Configure the internal ringer text and
internal ringer file.
Navigate to:
http://<phoneIPAddress>/servlet?m=mod_
data&p=settings-ring&q=load
Configuring Audio Features
831