sip trunking vs pri

SIP Trunking vs PRI

When deciding on a trunking option for delivering voice and data into businesses, IT policy makers have two main options from which to select. SIP (session initiation protocol) provides the same service as a conventional analog phone line, except it is done through a virtual connection rather than a physical wire. PRI (primary rate interface) is a single phone line which provides 23 voice channels and one data/control channel.

While the two options may seem similar on first glance, a closer inspection shows that there are key differences between them, as outlined below.

SIP vs PRI: The main differences

  • SIP connections are virtual; PRI connections are physical
  • SIP upscaling is a far quicker, easier process than with PRI
  • SIP is usually the more cost efficient option of the two
  • Adding capacity to an SIP trunk is quite straightforward, whereas it a timely process with PRI
  • It is far easier to divert calls with SIP than PRI
  • PRI, however, has a guaranteed quality of service which you won’t always get with SIP

The infographic below has been created by Irish Telecom (www.irishtelecom.com) and differentiates between SIP and PRI in an easily understandable fashion, outlining which is the better option for certain business circumstances.

sip-trunking-vs-pri-infographic

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