Alternate Caller ID
With the help of this function you can do so that when you call the number which you will indicate from the list registered on your account will display at the called subscriber.
“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.
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