Grandstream Networks HandyTone-801 User Manual page 7

・SeJng from Web Browser
Disable Call-WaiIng：
・ SelecIng Yes will noIfy new caller that line is busy when the callee is sIll at the middle of the call.
・ SelecIng No will noIfy new caller to assume that the line is ringing/acIve even when the callee is at the middle of a
call.
※ This is an opIonal secng. No secng required if no need.
※ Default is [No]. Factory secng by the company : [Yes]
SUBSCRIBE for MWI : Select [Yes, send periodical SUBSCRIBE for Message WaiIng IndicaIon]
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