Skip to Content

Move into a new era of communications

A cost-effective, more reliable alternative to ISDN30. With a staged approach to unified communications, customers can keep their existing PBX and enjoy enhanced cloud functionality that boosts efficiency and productivity.

What is it?

BT Wholesale SIP Trunking (WSIPT) is a secure, cloud-based IP voice solution that helps your customers to migrate towards unified communications with minimal disruption to their business. No initial capital outlay is required, and the solution is available on a ‘pay-as-you-go/grow’ basis. It’s suitable for any size of business, as it can handle anything from one to 10,000 channels per trunk group.

Benefits for you

Easy deployment. WSIPT is fully self-service. You can set up services for your customers quickly and easily via a simple web interface.

Selling power. WSIPT can open up new revenue streams by opening up the cross-selling of lines, calls, access, CPE, apps and services.

Good margins. We offer competitive wholesale call rates and licences are available on a pay-as-you-grow basis, enabling you to build your business profitably.

Reassurance. WSIPT runs on our highly resilient next-generation network and is supported by strong Service Level Agreements. We can failover up to six sites, delivering a reliable service over any data connection.

Benefits for your customers

Cost savings. On-net calls are free; calls to mobile and international numbers are much cheaper; and  there are no upgrade costs for the PBX features.

Better efficiency and productivity. IP Voice technology enables advanced call management, with features such as Instant Messaging (IM) and non-geographic numbers.

Flexibility. Your customers can choose from three channel service types and WSIPT can be scaled to suit any type of business, from a large contact centre to an SME.

Security. The service runs over a secure network and is certified to IS027001 for data security.

Reliability. WSIPT is an enterprise-grade solution, which runs on our world-class, highly resilient next generation network. It’s certified to IS022301 and offers unrivalled call handling capacity of 5,000 channels and 50 calls per second.

Ease of use. End users can benefit from the power of the cloud while retaining their existing PBX and handsets.

Top of page