Automatic Call-back
In telecommunications the automatic call-back is a computer telephone function which allows the user by the engaged addressee’s line or in the other case of the subscriber’s inaccessibility indicating the system to save the number of the called subscriber and make the call when the line will be available or when the called number is not engaged.
IP Devices
are the devices supporting Internet protocol, some of the devices a capable of
wireless, Wi-FI, broadband, edge and 3G connections. All the devices have their
own IP address.
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