Comrex VH2 VoIP Phone Hybrid

The Comrex VH2 offers the user the option of two digital lines and all the advantages of VoIP. With a very user-friendly operation, the users are able to easily manage phone calls in studio quality.
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Comrex VH2 VoIP Phone Hybrid

Any studio that processes phone calls needs hardware to interface with phone lines. This device, traditionally called a Hybrid, filters, separates and provides gain adjustment and call control to more easily allow for recording or broadcasting “phoners”.
As telephone companies are shifting from traditional phone lines to Voice-over-IP (VoIP) systems, the devices that performed this job in the past are becoming outmoded. Broadcasters need a VoIP hybrid to ensure on-air and recorded phone calls sound as good as possible.
A dual-line hybrid, VH2 connects two VoIP lines to a studio for individual broadcast or flawless conferencing. VH2 prevents echo and distortion, and automatically adjusts caller audio to a uniform level, leaving you with a result that’s clean and clear. Plus, VH2 uses only VoIP phone lines, saving you money and increasing functionality. VH2 can even connect to many VoIP PBX systems.

Easy Hookup
VH2 can be configured in several ways to be compatible in environments where the studio has different telephone connection arrangements. Dual or single input and outputs can be selected, and AES3* or analog audio I/O can be chosen. VH2 can be configured for callers to hear each other, or be isolated depending on the needs of the studio. *Supports 48 KHz sampling rate only for AES3.
On-Hold Inputs
VH2 offers a pair of audio inputs for callers “on-hold”. This allows for listeners to hear your programming while they are waiting to be put “on-air”.
Consistent Audio Levels
Selectable automatic gain control (AGC) maintains a uniform audio output, even when the caller signal varies widely. Also, selectable caller ducking lowers incoming caller audio, so local talent remains in control.
Companion Phone
When configured with its companion phone (the Polycom VVX 201 IP phone), VH2 does even more. Calls can be answered on the handset and easily transferred back and forth to VH2, just like a traditional telephone hybrid. And the companion phone supports caller ID and outbound calling.
Status Indication
VH2 is outfitted with front panel controls and status indicators so it can be used out-of-the-box. Front panel buttons can also be remoted via the rear panel connector, so your console buttons can trigger its functions.

Polycom VVX 201 IP Phone
The Polycom VVX 201 IP phone is an IP desk phone that provides excellent sound quality and reliable features in an easy to configure package.
The companion phone for the VH2, it allows for outgoing calls to be placed, calls to be answered and screened, and for conversations to take place “off-air”.

  • Prevents echo and other artifacts 
  • Supports normal phone calls (G.711) and wideband phone calls (G.722)
  • Allows for caller ID, outgoing calls, screening, and post-air management using companion VoIP phone set 
  • Set up via easy-to-use web based configuration page

Audio Connections
Caller audio out on balanced XLR-M output
Send audio in on balanced XLR-F input (clip +20dBu). Switchable to AES3 I/O (48KHz sampling rate only for AES3).
On-hold audio in on ¼” TRS jack input (clip +20dBu)

Other Connections
10/1000 Ethernet port
Contact closures 9 pin mini DIN
Serial port on 8 pin mini DIN
Power in on 4 pin mini DIN
Universal external power supply +24VDC
Compliant with worldwide regulations, including FCC, CSA, and CE
Comrex VH2 Brochure