Extentions
“Extension” - is the extension of the telephone line (PBX) or the Centrex system. It works as an association and allows calling to certain telephone sets without the necessity of dialing the telephone number, but only by dialing a short combination of digits, reaching the desired subscriber.
This function available in some telephone networks allows redirecting the incoming call to another telephone, for example, a mobile phone, a box of voicemail or another telephone number where the called subscriber is situated. In such a way the subscribers can, for instance, receive calls that have arrived at their work number from their home or mobile phone.
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