SIP Trunking

SIP Trunking

The next generation communication

SIP Trunking is where voice and data traffic are combined over a single network connection, unlike traditional methods which deliver them separately. The biggest motivation for any business to move to SIP Trunking is the immediate and substantial cost savings.

CT uses SIP Trunking as a standard based replacement for ISDN, as it provides a more flexible and lower cost alternative to ISDN for inbound and outbound voice calls.

SIP Trunking is cheaper on a per channel basis, (set up costs can be 100% lower than ISDN) is more flexible in terms of what telephone numbers you can have and where you can have them, is quicker to install and can offer a robust business continuity service.

Business benefits

ISO27001 approved

Infrastructure with free fraud mitigation and disaster recovery services

A single pipe

To deliver voice, data and business critical applications with 24/7 fault management

Connect directly

To your telecom provider so you can get rid of ISDN/PSTN and their cost and complexity

Eliminate a redundant network

One single IP based network, rather than redundant telephone and data networks

In sync

For developing requirements for unified communications and collaboration


Compatible with Skype for business

Why work with us?

Through advanced monitoring & diagnostic tools, problems are identified & resolved quickly

Solutions are tailored to meet your business requirements

Direct Tier 1 Carrier Connections

No long term contracts / pay as you go / scale to meet your needs

Detailed, specialist informed advice with best price guarantee

Existing ISDN connections can be used for a smooth transition

Key features

Number display ideal for contact centres

Business grade voice & internet convergence

Unifies systems & links multiple sites

Free UK calls & fraud protection

Channel calls over the internet

Built in business continuity


What is SIP Trunking?

A SIP trunk is a direct connection between your organisation and an Internet Telephony Service Provider (ITSP). It enables you to extend voice over IP (VoIP) telephony beyond your organisations firewall without the need for ISDN or traditional phone lines.

This simpler configuration is easier and less expensive to design, operate, maintain and upgrade. And because your telecom provider delivers services at substantial savings, your investment in SIP Trunking can give a quick and substantial return on investment.

Contact us

Interested in SIP Trunking?

Call Us On:
01246 266 130