[vc_row][vc_column][vc_column_text css=”.vc_custom_1537745798239{margin-bottom: 0px !important;}”]A SIP Trunk allow you to route concurrent calls over the Internet to an IP capable PBX or VOIP Gateway using the SIP protocol.  SIP trunking is usually used where the customer already has a IP-PBX solution in place on premise but want’s to reduce calling costs by using the internet to make and receive calls instead of relying on expensive circuits from their incumbent telecommunications provider.

Benefits of SIP Trunking include:

  • Your device does not need to be logged in or registered, so calls will always be routed to your IP-PBX. This means that if your internet connection was reset or went down temporarily you would start receiving calls immediately once your internet connection comes back up (instead of having to wait for a re-registration or login).
  • You can route all your numbers easily to your IP-PBX with no further configuration required. If you add more numbers to your account then they will automatically be routed down your trunk.
  • You save bandwidth since there is no need for SIP registrations or ‘polling’ traffic usually sent to devices that are behind NAT.
  • SIP trunks have the concept of a ‘pilot’ number.  You can present any caller ID number down your trunk and if it is not recognised as being on your account then the caller ID will be set to the trunk number.  This makes configuration simpler and avoids outbound calls ever being rejected.

SIP registration requires each phone of VOIP system to be individually registered with the cloud PBX service.

SIP registration and SIP trunking cannot both be enabled at the same time on the same account.[/vc_column_text][/vc_column][/vc_row]