ipDTL Voice-Over Studio

Paul Berry - 'Voiceover Paul'


Outside Broadcast via ipDTL

Capital FM, UK


ipDTL - HQ Audio for Voice Sessions

Guy Harris' studio - VoiceoverGuy, UK



Live radio contributions and voice sessions through your web browser

ISDN is Dead

For some years, ISDN has been the technology of choice for contributing to radio programmes. There are several reasons to look at alternative options…

  • Telecoms providers such as AT&T and BT are expected to withdraw ISDN provision in the coming years.
  • New technology allows ISDN equivalent audio to be sent and received over the internet. You’re already paying for your broadband connection, so why continue to pay for an ISDN line too?
  • An ISDN line requires an expensive hardware ‘codec’ at your end. When ISDN is no more, this too becomes obsolete.
  • If you relocate your office or move home, an ISDN line can’t easily be migrated in the same way that a broadband connection can.


ipDTL provides better-than ISDN quality audio using just a computer running Chrome.  Just add a good quality microphone.  Pay once for 12 months unlimited use.

‘ipDTL Ready’ Radio Stations include…
NPR, BBC Radio 4, WABC, 2Day FM, CBC, LBC, BBC Radio 5 live, WNYC, BBC World Service, KROQ…and the list is rapidly growing.

A free account provides two basic audio logins which connect to each other in optimum network conditions in low quality. Audio, HQ Audio and Video logins connect at higher quality and benefit from our ‘relay servers’ which provide guaranteed connectivity.

Try it today!

ipdtl yeti mic with mac


A computer.

Audio ‎interface or USB microphone.
Good internet connection.


Install Chrome browser.

Get an account.
Follow the instructions.


Simple to setup.

Annual subscription.
No connection fees.


Wideband OPUS codec.

Peer to Peer. Low delay.
Automatic NAT traversal.

Remote Contribution Terminal

Our Remote Contribution Terminal is a black box which connects to the broadcaster over the internet using our ipDTL technology.  Unlike ISDN, it can also be used to facilitate TV interviews. The equipment is installed by In:Quality and can be paid for on a ‘per use’ basis by the broadcaster or on a contract by your organisation (UK only).

We understand that no two businesses are the same and that you may well have individual needs.  We can offer a range of flexible solutions to get you on air, so get in touch!