SIP Trunking FAQs

The following are some of the most common questions asked about SIP Trunking. If you don’t find your answer in our SIP Trunking FAQs, contact us by calling 1-888-825-0800, Option 1 and we’ll be happy to answer any questions you may have.

Please click on a topic to expand or collapse the solution.

  • What is SIP Trunking?
  • What are the main benefits of SIP Trunking?
  • What are SIP channels?
  • We are using a PRI now, how is this different?
  • Are SIP and VoIP the same thing?
  • How is the quality of a call over a SIP Trunk?
  • Is SIP Trunking very technical?
  • What PBX can you connect to?
  • I don’t have an IP PBX, can I still use a SIP Trunk?
  • What is the Inbound Protocol and the Inbound Protocol Listen port?
  • Do you support TLS encryption?
  • What is the maximum number of concurrent calls on a SIP Trunk?
  • Do you require Normal Media or Delayed Media?
  • Do you require P-Asserted Identity if the connection type is public IP address?
  • Do you require Outbound Digest Authentication if the connection type is public IP address?
  • Do you require the FROM Header to come from a specific address if the connection type is public IP address?
  • Do you support SIP Diversion Headers?

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