What is ipDTL for?
Live Radio Interviews
Radio OBs
Remote Podcast Recording
Voice Sessions
Basic Operation
Log in using a web browser
Send a Link
Call a SIP address
Dial a phone number
Advanced Operation
Multitrack WAV recording
Up to 6 remote connections
Dial ISDN calls
Get your own ISDN Number
Related Products
sip.audio for SIP devices & apps
hyrbrIP Phone-In System
From £18 per month
Broadcast quality audio using Opus & SIP
In its simplest form, ipDTL connects one computer to another, giving 2-way audio between web browsers, using the wideband low delay Opus codec.
SIP is the protocol for connecting between studios, which has replaced ISDN. ipDTL includes SIP calling as standard. It can also make phone and ISDN calls.
Getting Started
  SIP Studio Finder
Find a Studio anywhere in the World.
See which Radio Stations are SIP enabled.
Add a new Listing.
  ipDTL Voice Network
Rob Goldstone
Voice Over
Essex , United Kingdom
Connecting the World
The biggest brands and broadcasters trust In:Quality
About ipDTL
A system which allows radio and podcast presenters to connect with studios, co-presenters, producers and guests. It requires just a computer with an internet connection, and a USB mic or audio interface.
In:Quality Limited - a UK company - has developed and operates a worldwide network for the real time transmission of professional audio. Established in 2013 in the North of England, its Founding Director is Kevin Leach – a former radio presenter and BBC sound engineer.
Technical Data & Compatibility
Operating Systems: Windows, MacOS, Linux, ChromeOS
Audio Codecs: IP:       OPUS, iLBC, G722, G711
ISDN: MPEG LII (128 Mono+JS, 64), G722, AAC LD (64 & 128), AAC 128, MPEG L3 128
Video Codecs: VP8, H.264 <=1080p
Browsers: Chrome, Edge, Opera (More)
Servers: Europe, N. America, S. America, Asia, Australasia
Backup system at ipdtl2.com
Protocols: WebRTC
STUN, TURN - Automatic NAT traversal
Use ipDTL for all of this:
Microphone and Headphones motif with ipDTL text on white background Live Remote Broadcasting in your Web Browser for presenters, guests and reporters..
Connect using web browser for radio OBs, voiceover, news reports and sports commentary.
Call guests for podcast and radio interviews from your web browser with multi-track recording.
Create a Phone Patch for voice sessions. Send a Link to connect in browser.
Live Radio Interviews, Live Interviews, Media Tours, News Contributions, Remote Podcast Recording, Voice Sessions.
More reasons to use ipDTL:
Connect to multiple locations.
Mix and record the audio in ipDTL’s virtual mixer. Multitrack WAV recording.
Wideband OPUS audio codec. Point to Point data connection.
The system will try to establish a ‘point-to-point’ connection between two computers. If NAT configuration prevents this, audio streams are sent via one of our relay servers in the cloud.
Monthly or annual subscriptions can be made by Credit Card.
Call a SIP address. Every ipDTL Username has its own sip.audio address.
Call any.device@sip.audio ...Comrex, Tieline, In:Quality, Wheatstone, Luci, JK Audio, Vortex, AEQ, AETA, Barix, Digigram, Mayah, Prodys...
Does the job of ISDN at a fraction of the cost!
Phone and ISDN audio calls from your web browser
No ISDN line required. No call charges.
You can make an outgoing call, or set ipDTL to receive an incoming call.
Receive calls to your own Los Angeles ISDN number(s).
The cost-effective ISDN replacement
hybrIP Phone-In System
Replace traditional Telephone Balance Unit, with ipDTL integration and call screening.
What does ipDTL stand for?
ipDTL = Internet Protocol / Down the Line