Yealink SIP-T4X Administrator's Manual page 52

Administrator's Guide for SIP-T4X IP Phones
180 Ring Workaround
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Use Outbound Proxy in Dialog
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SIP Session Timer
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Session Timer
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Call Hold
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Call Forward
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Call Transfer
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Network Conference
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Transfer on Conference Hang Up
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Directed Call Pickup
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Group Call Pickup
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Dialog-Info Call Pickup
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Call Return
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Call Park
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Web Server Type
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Calling Line Identification Presentation
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Connected Line Identification Presentation
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DTMF
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Suppress DTMF Display
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Transfer via DTMF
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Intercom
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Power indicator LED indicates power status and phone status. There are six
configuration options for power indicator LED:
Common Power Light On
Common Power Light On allows the power indicator LED to be turned on.
Ring Power Light Flash
Ring Power Light Flash allows the power indicator LED to flash when the IP phone
receives an incoming call. If this option is disabled, the status of the power indicator LED
is determined by the option ―Common Power Light On‖.
Voice/Text Mail Power Light Flash
Voice/Text Mail Power Light Flash allows the power indicator LED to flash when the IP
phone receives a voice mail or a text message. If this option is disabled, the status of
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