Hassle-Free SIP Trunking

We provide a high quality SIP Trunking service, connecting your PBX directly into our network via a DSL or Ethernet IP connection. This allows you to receive and terminate your voice calls over the public telephone network.

SIP trunking provides a highly flexible alternative to ISDN and has been fully tested with many leading IP PBX applications such as Asterisk, Avaya, Cisco, 3CX, Freeswitch and SNOM.

SIP trunks are essential for businesses managing their own in-house PBX.

numbergroup-sip-diagram

Adding SIP trunks to a high-quality PBX service can drastically reduce expenses in several ways. First, you eliminate monthly charges from a service provider. Second, with SIP trunks every call becomes local, so your long distance calling expenses are slashed as well. You can also save money by paying for one service for communications, rather than a separate voice and data plan. Finally, SIP trunks make it easy to scale your system without incurring the cost of adding physical phone lines.
SIP trunking also reduces costs by eliminating the need for separate voice and data connections, and expands the potential for communications convergence using both voice and data together. As a company grows, all necessary infrastructure to handle additional voice/data traffic is already in place. This gives companies of all sizes a streamlined, cloud-hosted phone system that combines different advanced communication features.
Because SIP trunks are virtual rather than physical, scaling and maintenance are much easier. With legacy telephony, increasing capacity requires you to purchase additional physical lines from the phone company. SIP trunks however can be easily adjusted with a change to the software configuration. So, not only do SIP trunks save businesses money in terms of maintenance, they also save time as there’s no need to spend weeks talking back and forth with technicians every time a new line needs to be installed.
SIP trunks are extremely stable, because as virtual lines they are not susceptible to local power outages resulting from weather events or equipment failure. The technology also allows call to be routed to pre-determined locations if a primary office location goes offline for any reason. Considering even a few minutes of downtime can cost a business thousands of pounds, business continuity is a major advantage of SIP trunking.

Supported PBX Platforms

So What Exactly is SIP Trunking?

To understand “SIP Trunking”, you first need understand “SIP”.

SIP stands for “Session Initiation Protocol”. It is the technology used for establishing a voice communication session on a data network (e.g. over the Internet).

A SIP “session” might be a regular VoIP phone call between two participants or a multi-party conference call.

A SIP Trunk provides the same service you get from a traditional analog phone line. The difference is, instead of being a physical wire, a SIP Trunk is a “virtual” phone line which is provided by a SIP trunk provider. They use your data circuit (T1, Cable Modem, DSL, Ethernet over Copper, etc) to connect your phone system back to their network.

For more information, take a look at an article we wrote recently about SIP Trunking and how it reduces telecom costs.