What is SIP Trunking?

SIP Trunk

SIP Trunking is a service that allows you to connect via Session Initiation Protocol to an Internet Telephony Service Provider’s network. In simple terms, this means that you can use this service to send and receive phone calls across the internet.

The trunk or connection to the provider’s network can be tailored to your specific needs.

It can have a limit on the number of calls that can be made at the same time. This is generally known as channel usage and this forms the basis of how the service is billed. Each channel is charged at a cost per month. What differs from traditional telephony is the ability to increase and decrease this without having the penalty of always paying for the highest amount. The service can be set up to allow for national calls only, or for national and international together, in fact, you can choose to either allow or disallow calls to any worldwide destination.

Benefits of SIP over traditional
fixed line and digital services

Reduced costs

Reduced costs

By utilising your existing PBX or IP infrastructure and purchasing the small amount of equipment required, companies can save over 40% on their legacy business telephony system.

Reduced time to deliver

Reduced time to deliver

SIP trunks can be created on the day and can be deployed by the client in a very short timescale, as opposed to traditional analogue and digital solutions, which can take anything from seven days to multiple months.

Choose your numbers

Choose your numbers

SIP trunking allows you to remove the restriction of being tied to your local exchange area and the numbers that are provided within that area. You can have numbers from London, Birmingham or Manchester all sent to your office located anywhere in the country.

Choose your PBX

Choose your own IP PBX

SIP trunking gives you the freedom to pick and choose your own IP PBX. Our service is proven to work on most popular IP PBX models via our simple registration method.

No Compromises

No extension costs

By using SIP trunking with Packnet, you pay for how many concurrent calls your business requires, not how many extensions.

Is SIP Trunking as good as traditional
communications services?

When set up correctly, SIP trunking offers voice quality that is as good as, or better, than traditional communications. A well managed local network is recommended, as well as an internet connection with enough bandwidth to ensure the service can operate in the best manner possible.

The cost of calls using VoIP is generally cheaper than those made using traditional telephony services. SIP trunking differs from fully hosted in that an on-site IP PBX is normally required. However, forget waiting over 48 hours for your service fault resolution, in the rare occurrence of a fault, most SIP trunking issues can be diagnosed and resolved on the same day.

Connectivity is king, so you must take this into consideration when choosing SIP trunking for your business. Packnet offers a wide range of connectivity products from Leased Lines to FTTC.