The advantages of wholesale DID origination

[tanjimajuha20]

Direct Inward Dialing is a technology developed to provide a block of telephone numbers for a company’s PBX (private branch exchange). Those numbers are available for distribution to a host of different individuals or departments without each needing a separate incoming phone line. In its original analogue form, it was first offered around 1960 by companies such as AT&T but required the installation of costly hardware in the customer’s premises.

At one time, the wider france telegram telecom infrastructure that was required was also expensive. Incumbent local exchange carriers (ILEC) were set up to deliver the loops and other facilities required but the infrastructure was only affordable for the largest corporations. Similar operations called competitive local exchange carriers (CLEC) were supposed to widen availability by leasing capacity in a competitive market but had limited success.

The advent of VoIP and wholesale DID origination is now bringing all those benefits at a far more affordable price and without the need for elaborate physical hardware on site. A DID provider, such as IDT Express, aggregates access to the variety of resources needed to make those connections for you. Calls made to that number are then forwarded to your VoIP, usually using SIP (session initiation) protocol.



Your virtual numbers can be local to you or a local number in any city of the world, enabling you to have a “local” presence everywhere. This is far more appealing for customers in those locations. Since each extension number can be linked to a regular or mobile phone located anywhere, this also means your workforce can be distributed in a variety of diverse locations or even working from home.