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Wholesale Hosted Communications (WHC)

Let your customers call, share and collaborate from a single cloud-based platform.

Key benefits

Easy porting

Set up new numbers or bring over existing ones through our easy-to-use Business Zone portal.


Great add-ons

Build custom solutions with our range of optional addons, including analytics, Webex and call centre apps.


Ready to grow

Scaling up is easy, because you can order what you need when you need it. And you can scale back too, if you need to.


Flexible deployment

Give your customers the choice to connect straight to the cloud or keep their existing on-site hardware.

WHC in action

When IT provider Calteq was faced with unprecedented challenges, the flexibility of WHC and our partnership helped it to survive and thrive.


Read our case study to find out more.

What is WHC?

WHC is a cloud-based phone solution that works via either Hosted PBX or Hosted SIP Trunking.

Hosted PBX

A completely digital and future-proof system. Your customers will connect digital phones, computers and mobile devices directly to the internet.

Hosted SIP Trunking 

Replace ISDN and let your customers keep their on-site PBX hardware – so they can stagger or delay their eventual transition to all-IP. 

For better teamwork, just add Webex

Expand your portfolio with WHC with Webex. Offer high-definition videoconferencing, shared digital spaces, instant messaging and file sharing – all in one scalable, cost-effective platform.

Add external calls to Microsoft Teams

Built for the channel market, WHC Teams Direct Connect lets you integrate WHC into Teams in a matter of minutes. You can even mix and match Hosted PBX, Hosted SIP Trunking and Microsoft Teams.

To get started with WHC Teams Direct Connect, your customers will need to already have Microsoft 365 and Microsoft Teams licences

Expand your reach with WHC Express

96% of businesses in the UK have fewer than 10 employees. Make the most of that opportunity with WHC Express, a digital phone line made especially
for small businesses.

Business at the speed of API

Ready to do business faster, and smarter? BT Wholesale's APIs integrate services and systems to grow your revenues.

More about WHC

On the phone

WHC datasheet

Download our handy guide to WHC’s features and benefits.

WHC infographic

Learn how to build a leading unified-communications-as-a-service proposition.

The WHC selling guide

Everything you need to know to get started with WHC with Webex.