Directory Number Hunting
Is a telephony service allowing the distribution of telephone calls from one telephone number in the group consisting from several telephone lines, using the special algorithm, which determines the line receiving a call.
Voice over Internet Protocol (VoIP) calling is most convenient when using a mobile phone. BlackBerry users have plenty of choices when it comes to picking a VoIP app that is compatible with their phones so that they can take the convenience of VoIP calling with them anywhere.
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