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5.6.3 FXS1/2 Supplementary Service Subscription
Select to enable or disable
Fill in the hotline number. After
the subscriber is set up
successfully, the hotline number
will be automatically dialed
immediately after off-hook
Enable WMI (Message Waiting
Indication), enable this function
if you want to use voicemail
Fill in the voicemail code
provided by your ISP
Select to enable or disable
Select to enable or disable
After enable this option, any
phone call cannot be dialed in,