USB SIP Codec ‘Zero’ Starter Kit


As seen on & Radio World.

Ships from:
United Kingdom


Receive SIP calls for radio and podcast interviews, with this tiny IP codec, complete with microphone, and a pair of headphones.

The USB SIP Codec from In:Quality connects to your existing internet connection, and allows radio stations to connect with you in full studio quality, thanks to its use of the Opus codec.  It can be shipped pre-configured with your own unique address.  Simply plug it in, and wait for a call.

The simplest way to use this device is in auto-answer mode. It’s also possible to control the device using a keyboard, mouse, and HDMI monitor, or by discovering its IP address using a nearby computer.

Included with this purchase:
USB SIP Codec ‘Zero’
Power Adaptor
USB Microphone (exact model may vary)
Ethernet Cable
12 months subscription (click here for renewal rates – bulk discount available)


Which radio stations can I connect with?
Find SIP enabled radio stations on our SIP Studio Map. An easy way for radio stations to call SIP codecs is to dial the SIP address from the dial pad in ipDTL.
Can I make outbound SIP or ISDN calls?
As the name suggests, the USB SIP Codec ‘Zero’ is designed to be ‘zero configuration’.  It arrives pre-configured, and the user simply switches the microphone on and off.  Technically savvy users can access it through its IP address from a nearby computer, or attach a monitor, keyboard and mouse.  Outbound calls can be established using these methods. An additional Tel+ subscription is required for outbound ISDN calls.
Can I receive inbound ISDN calls?
There is a way to receive an ISDN call via a pre-configured quick-dial button.  ISDN numbers are assigned dynamically on demand, or you can get your own LA area ISDN number with your subscription.  A package including a Tel subscription is required for inbound ISDN calls.
Can I connect the USB SIP Codec to the internet using wifi?
Wi-Fi or mobile broadband are the most common causes of radio interviews dropping off. To ensure reliability, our USB SIP Codec is connected to your broadband router using a physical cable.  Most wifi routers have ethernet sockets on the back.  You can use an extra long ethernet cable, or ‘Powerline’ adaptors where cable routing is not an option.

Warranty & Support

  • Free repair or replacement, while subscription remains active, up to 5 years.
  • Free technical support via

Technical Specifications

Protocols SIP
EBU Tech 3326 / N/ACIP (partially compliant)
AES67 (beta)
Codecs Opus
Network Ethernet (DHCP or Static)
Power AC 100-240v 0.5A 50-60Hz
DC 5.1v 2.5A Micro USB
USB 4 x ports
Support for audio, keyboard, mouse
1.2A max USB power (0.5A per port)
HDMI Displays device status and optional UI.

Product Manual

Delivery within USA or UK takes between 2 & 5 working days.