What is SIP Trunking?

Session Initiation Protocol trunks, or SIP trunking, is a VOIP and media streaming service that allows Internet telephony service providers (ITSP) to deliver phone service and unified communications to customers.  To put it simply, a SIP trunk is a connection between an organization and an ITSP.

SIP Trunks allow for services including voice over IP (VOIP), instant messaging, multimedia conferencing, voice calls, video chat, desktop sharing, web conferencing and other internet-based distance services.  Through SIP trunking, these services are easier and cheaper to maintain, operate, design and manage than they are through an IP-PSTN gateway.  These advantages mean that SIP trunks are becoming more available and more communication-based technologies are emerging all the time.  An investment in a SIP trunk can save you money and give you a pretty fast ROI.

SIP Trunk Requirements

Get StartedThere are a number of things you will need to consider in order to utilize SIP trunking.

  • Mediation Server: You will need someone with knowledge of setting up and deploying mediation servers.
  • Connection Type: Will you use a public line, a dedicated line with no other traffic or a dedicated line that shares other IP traffic?
  • Bandwidth: You will need to determine how much bandwidth will fit your needs.
  • Codecs: You will need to know what codecs to use.
  • ITSP: Different Internet telephony service providers (ITSP) have different implementation methods.

If you don't know how to determine any of the above, we can help.


Let Petronella Computer Consultants, Inc. show you how we can allow your business to start saving money quickly, stay more connected and communicate with your customers more easily.


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