Affordable DID number provider

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FORWARDINGMYCALLS

DID NUMBER PROVIDER

• A good and reliable DID number provider will
  offer best solutions that can work with latest
  and cloud-based PBX systems effectively

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• Telephone companies offer a service to connect a
  customers' private branch exchange (PBX,
  responsible for switching the calls to the
  appropriate extension) system to the PSTN (Public
  Switched Telephone Network, or the traditional
  telephone network, which does not use the
  Internet during a phone call). It is called
  Direct Dial-In (DDI) or Direct Inward Dialing
  (DID), both are explained in a later paragraph.
• It is made on an external VoIP (Voice over
  Internet Protocol, a protocol, which defines the
  transmission of multimedia sessions via the
  Internet) phone, and gets transmitted to the PBX
  of your company, where it is switched to the
  desired local extension.
• If an internal call is made, however, then the
  call is simply transmitted from a VoIP phone to
  the PBX, where it gets switched to the
  appropriate extension within the company. This
  process takes place entirely in the local
  network.

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• DID numbers are connected to a SIP which is
  responsible for making, terminating and
  maintaining the connection between two
  conversation partners) gateway that connects them
  to both the PSTN and the Internet. Calls between
  the two networks are routed and translated for
  the VoIP user by the gateway. If a call comes
  from the VoIP network PSTN users will see it as
  coming from one of the assigned DID numbers. As
  the DID gateway is not always in the same
  geographic area as VoIP systems, those systems
  are frequently called virtual DIDs.

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• Thankyou