• Digital hybrid and GS-MPI005HD HD Voice phone
• Audio switchable between hybrid and mobile phone
• RJ11 connector for fixed POTs line
• Audio inputs/output on common electronically balanced XLR's
• 100-240V mains power (powers all features in subrack)
• 12V PSU option

The GS-MPITBU features a digital TBU and a Glensound Broadcasters' Mobile Phone. Both lines can be connected simultaneously so that when there is a need for a quick change, a simple flick of the routing switch changes from TBU to mobile or vice versa. 

Line connection is via a standard RJ11 connector to a fixed POTS line. A standard keypad is used on the front panel where a single on/off hook switch is used to dial and receive calls. A large red LED illuminates when connected and turns off when disconnected. A sounder provides indication of incoming calls which can be disabled via the switch for studio environments. Using presets, separate audio level controls for both the input and output of the TBU can be established. 

Audio Routing
Using a low profile 2 way switch located in the centre of the front panel, incoming and outgoing audio can be routed to either the POTS TBU or the mobile phone module.

Audio Inputs and Outputs
The common electronically balanced XLR input and output is located on the rear of the panel. A 6.35mm jack headphone socket is provided on the front of the mobile phone panel for listen only monitoring.

Extended Aerial Options
As standard, an SMA aerial connector is fitted on phone module for aerial location up to 3m away. This can be changed for an N-Type to allow aerial connections up to 50m away.

Power
Standard mains 100-240 Volts (or optional 12V PSU) is used to power all features of the sub rack.

• 7kHz audio bandwidth
• Uses AMR-WB (G722.2)
• HD Voice is a voice call so there are no data or IP issues
• Operates on compatible 3G UMTS networks (compatible country list on the download tab)
• Please click the link on the download tab for sample audio

Glensound HD Voice 
The Glensound Broadcasters' Mobile Phone - now with Glensound HD Voice, giving you up to 7 kHz audio bandwidth on a 3G (UMTS) network for the same price as a normal GSM call.  The GS-MPIHD Range features AMR-WB (adaptive multirate wide band), sometimes known as G722.2. This algorithm is more commonly known as HD Voice.  This extra bandwidth makes a significant difference in call quality, with improved lower frequency response and much clearer audio.

A Reliable Connection
Glensound HD Voice connects as a 3G (UMTS) GSM call, not a data call, so when connected you will not lose call quality over the duration of a call as often experienced on an IP call.

If 3G (UMTS) is not available, the call will connect as a standard 2G GSM call. The GS-MPIHD Range can be set to 2G only mode, a 3G (UMTS) only mode or auto. In auto, a connected 3G (UMTS) call will drop back to 2G if you move outside of a 3G (UMTS) signal area. Please note that it will not switch back if you re-enter a 3G (UMTS) area.  Both ends of the connection must be AMR-WB compatible for a HD Voice connection. 

Glensound HD Voice At Large Events
As Glensound HD Voice is just a voice call, it is not affected by the low data rates that are experienced at stadiums and events with 50,000 people.  You do not need to rely on a getting a 2MB connection - it doesn't use the data path.  It simply connects as a normal voice call.  This is the key point that makes the Glensound HD Voice system perfect for reporting or talkback at busy news and sport events.

AMR-WB Availability
Availability of AMR-WB is network specific, and varies from country to country. New countries are enablingf HD Voice all the time.  Please click the download tab for a list of the courrent countries that have enabled the service.

Extra Bandwidth.....for free!!!
HD Voice is a transparant and free service.  So the GS-MPIHD range will just work on 7kHz, at no extra cost over a regular 2G GSM call. Remember, the network sees this as a voice call, not a data call

• GS-MPI Range Brochure
• HD Voice Audio Sample
• HD Voice Configuration Options
• HD Voice Worldwide Availability

Please use one of the following methods to contact us:

Telephone: 01622 753662
International: +44 1622 753662
Email: sales@glensound.com
Skype: No longer used
Online: contact form