We listen, understand and suggest solutions that make your business work better

Complex communication
made simple

We help streamline
your business
communications

Contact Us

The benefits of SIP Trunks

Compared to ISDN, SIP trunks are less costly per channel, plus they are more flexible as to how or where geographic numbers can be used.

They are quicker to install and provision plus they deliver robust business continuity, automatically pointing to an alternative number, if your broadband should fail.

The service can support connections ranging from two channels for small PBX-equipped businesses to an unlimited number of channels for large enterprises and contact centres.

SIP Trunks provide a more flexible and lower cost alternative to ISDN for inbound and outbound voice calls. They connect your PBX via broadband, Ethernet or private circuit.

For added reassurance, SIP Trunking can even be used with existing ISDN connections to ensure the transition goes smoothly.

Any business with a modern day PBX can switch to SIP Trunks and immediately benefit from a more flexible, less expensive and arguably, more resilient phone service. Call us to see how SIP v ISDN could benefit your business.

SIP ISDN
SIP Trunks are extremely flexible as they can be scaled up or down to the exact amount of channels that are required by the business. ISDN lines increase the amount of channels in 2’s at a time, which may be a lot more than what is actually needed by a business.
The cost of SIP Trunking is typically significantly cheaper than the ISDN services Whilst providers have lowered the price of lines and calls, line rentals still cannot compete with the low cost of SiP Trunks
Convergence of voice, data and video over a common IP network provides economies of scope and scale and reduced network complexity. ISDN is suitable to handle different types of services (voice, data and video)-supports channel bonding for higher bandwidth, the same way as adsl is bonded together. However, Sip Trunks provided via a leased line or equivalent work even better
SIP trunking provides a far more effective and flexible disaster recovery option, as all voice SIP traffic can be quickly rerouted to a disaster recovery centre. Whist a divert can be put in place at network level, it takes time compared to an automatic switch over using SIP

Benefits of Our SIP Trunking

High Quality Gamma SIP Trunks
  • Delivered over Gamma Broadband or Gamma Ethernet
  • High-quality voice and data service from just one connection
  • Significant cost savings
Improve Your Calls
  • Our SIP trunks, when combined with our Inbound service, means your calls can always get through in in the event of network failure.
  • Our SIP trunking service provides free call termination to UK fixed destinations, including 01, 02 and 03 number ranges, as well as mobile calls
  • We can supply SIP trunking with out-of-area geographic number ranges


Click on the video below:

What our clients say about the Direct Line...

We have used Direct Line Communications as our Telecoms Advisers since moving into our first office 12 months ago...
read more...

I just wanted to say how pleased I have been with our switch for lines and calls to Direct Line Communications...
read more...