3130IF -VoIP User Manual V2.0
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Configuration Explanation:
Configure output volume;
Configure input volume;
Configure handsfree volume;
Configure handdown time, that is, if the hooking time is shorter than this time,
then the gateway will not consider the user has handdown.
Number binding configuration
Function of number IP table is one way to implement the phone's calling online,
and the calling of the phone will be more flexible by configuration the number
IP table. For example, user know the other party's number and IP and want to
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