T-Mobile Blocks VoIP Rival's Calls in the UK

T-Mobile Blocks VoIP Rival's Calls in the UK

T-Mobile is blocking calls from its network to UK mobile VOIP operator Truphone, in a dispute over costs that gets to the heart of the struggle between mobile operators and VOIP providers.

Customers on Truphone's beta service can connect fully, but T-Mobile has blocked calls to a number range (07978 8xxxxx) on which Truphone is planning to launch a full commercial service, diverting calls to a recorded message saying they have misdialled.

"This amounts to T-Mobile being able to veto a new entrant into the market," said James Tagg, chief executive of Truphone, accusing T-Mobile of abusing its power. "This would put telephony back 100 years, to a time when interconnections were not assured."

T-Mobile says it isn't refusing to connect, it is simply negotiating over the price it pays to Truphone when it connects a call to its network. As a mobile operator T-Mobile is required to 'make calls or otherwise transmit electronic communications to every normal telephone number', including those owned by VOIP operators.

Ofcom has published rates that operators are allowed to charge for interconnection to their numbers, and says these fees should be "fair and reasonable" and "transparent". However, Ofcom only states they apply to mobile networks, according to Dean Bubley of Disruptive Analysis, leaving a possibility for mobile operators to discriminate against those they regard as not being "real" mobile operators.

T-Mobile says Truphone is not a mobile network and shouldn't get paid as much as a mobile network would. "Other operators have invested huge amounts of money into their networks. Truphone has no network to maintain," said a T-Mobile statement. Truphone is asking for the same rates as mobile networks, and being offered a much lower rate, which it claims is below its costs.

"T-Mobile will argue that it is not 'blocking' Truphone but is merely negotiating on price," said Tagg. "T-Mobile receives 35 pence per minute from its customers but is offering only 21 pence per minute to Truphone even when Truphone's costs are 9 pence per minute to terminate the call. T-Mobile is blocking our numbers unless we accept this loss-making offer and, since T-Mobile is the only company that can route calls from its customers it has a complete veto on the Truphone service."

Confusingly, T-Mobile spokesman Simon Marks is quoted as saying: "It's not up to us to decide what kind of network Truphone is," although this is exactly what T-Mobile is doing. Truphone's numbers start with "07", and any customer dialing them would expect to pay the full mobile interconnection charge, as levied by other operators (including Vodafone which has backed down on an earlier effort to block Truphone).

In the run up to its commercial launch Truphone has recently showed extensions to its service, including support for SMS-over-IP, VOIP over 3G, and 'presence' capabilities so users can see which other Truphone users are currently available by VOIP.

Despite T-Mobile's hostility to VOIP, the company's parent Deutsche Telekomm has invested in VOIP, in the form of provider Jajah; it also connects with VOIP services it approves of, including BT's Fusion service.

Join the newsletter!

Error: Please check your email address.
Rocket to Success - Your 10 Tips for Smarter ERP System Selection
Keep up with the latest tech news, reviews and previews by subscribing to the Good Gear Guide newsletter.

Peter Judge

Techworld.com
Show Comments

Cool Tech

SanDisk MicroSDXC™ for Nintendo® Switch™

Learn more >

Breitling Superocean Heritage Chronographe 44

Learn more >

Toys for Boys

Family Friendly

Panasonic 4K UHD Blu-Ray Player and Full HD Recorder with Netflix - UBT1GL-K

Learn more >

Stocking Stuffer

Razer DeathAdder Expert Ergonomic Gaming Mouse

Learn more >

Christmas Gift Guide

Click for more ›

Most Popular Reviews

Latest Articles

Resources

PCW Evaluation Team

Edwina Hargreaves

WD My Cloud Home

I would recommend this device for families and small businesses who want one safe place to store all their important digital content and a way to easily share it with friends, family, business partners, or customers.

Walid Mikhael

Brother QL-820NWB Professional Label Printer

It’s easy to set up, it’s compact and quiet when printing and to top if off, the print quality is excellent. This is hands down the best printer I’ve used for printing labels.

Ben Ramsden

Sharp PN-40TC1 Huddle Board

Brainstorming, innovation, problem solving, and negotiation have all become much more productive and valuable if people can easily collaborate in real time with minimal friction.

Sarah Ieroianni

Brother QL-820NWB Professional Label Printer

The print quality also does not disappoint, it’s clear, bold, doesn’t smudge and the text is perfectly sized.

Ratchada Dunn

Sharp PN-40TC1 Huddle Board

The Huddle Board’s built in program; Sharp Touch Viewing software allows us to easily manipulate and edit our documents (jpegs and PDFs) all at the same time on the dashboard.

George Khoury

Sharp PN-40TC1 Huddle Board

The biggest perks for me would be that it comes with easy to use and comprehensive programs that make the collaboration process a whole lot more intuitive and organic

Featured Content

Product Launch Showcase

Latest Jobs

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?