Glensound invented the Broadcaster’s mobile phone and our GS-MPI005 and GSMPI005HD
mobile phone racks have been hugely popular with broadcasters and can be
found in daily use in outside broadcast trucks around the World.
The completely updated GS-MPI005HD MKII is a mains powered 1RU subrack that can be
fitted with up to two mobile phones featuring professional audio interfaces for interfacing
broadcast audio equipment to cell phone networks.
On the surface the new GS-MPI005HD MKII looks different as it has touch screen colour
displays for each phone module fitted. A traditional telephone handset interface is also now
provided to allow an operator to communicate off air before handing the call over to
broadcast. The handset interface can also dial and answer calls.
No new modern piece of audio broadcast equipment is complete without an AoIP solution
so the new GS-MPI005HD MKII has an optional Dante®/ AES67 card.
Of course the crystal clear sound and audio inputs & outputs that are interference free of
cell phone noise that made the original units so popular also feature in this new design.
Glensound HD Voice – 7kHz Audio Bandwidth
Glensound HD Voice is an automatic feature available around the world on compatible mobile
networks using 4G LTE or 3G UMTS. Connecting two Glensound HD Voice broadcasters mobile phones
in the same country, across a compatible 4G LTE or 3G UMTS network, will give a clear 7kHz of audio
l HD Voice Is AMR-WB (Adaptive Multi Rate Wide Band)
Also known as G.722.2. This is the algorithm more
commonly known as HD Voice. It offers significant advantages for
– Doubles voice bandwidth over 2G GSM to 50-
7000Hz (2G narrow band speech codec is 300-
– 12.65 kbit/s or higher coding bit-rates provide high
quality wideband audio
– Gives a better lower frequency response, down to
50Hz (2G is 300 Hz), for more natural sounding
l Glensound HD Voice Does Not Require The Data Network
With HD Voice, the GS-MPI005HD MKII connects as a voice call, not a data call.
– Bandwidth is consistent once connected. With data connections,
bandwidth varies during a connection, but on a HD Voice call it
does not. Once you are connected your call quality will remain
– No extra call charges. As the network sees the connection as a
voice call, there are no extra charges and no data usage as part of
a data charging package.
– The GS-MPI005HD MKII will still operate at 7 kHz HD Voice even in
busy locations where there is little available data – HD Voice doesn’t need data!
l Configurable To Operate On 2G GSM, 3G UMTS or 4G LTE
Calls can be locked to 2G, or 3G only with any calls made on HD Voice automatically dropping
down to 2G when moving outside a 3G area without disconnecting the call. The GS-MPI005HD MKII also
operates as a standard 2G mobile phone, and with advances in performance and noise reduction
capabilities found on the unit, improvements in call quality can still be heard.
l Accommodates A Broader Range Of Audio Frequencies
Glensound HD Voice can accommodate a wider range of audio frequencies thus improving the
overall call quality. This will aid ultimate clarity in noisy environments with reduced background noise from
the background noise suppressor.
l A Cost Effective Upgrade
Glensound HD Voice is one of the most cost effective upgrades that can be made to improve
audio quality using mobile phones. This makes the GS-MPI005HD MKII perfect as a remote live reporting
or talkback tool.
All New MKII Broadcaster’s Mobile Phone
The all new GS-MPI005HD MKII is a completely new modern design with extra features and
functionality to enhance and improve the much loved original GS-MPI005HD. It however keeps the
inherent crystal clear mobile phone audio and interference free circuits that made the original so popular
with so many broadcasters.
l Touch Screen Display
A front panel touchscreen display is provided for each mobile phone fitted. Each touchscreen
allows the operator to make and receive calls, transfer the call between the broadcast circuits and
telephone handset and a detailed setup menu is also accessible via the touchscreen.
l Telephone Handset Interface
For flexibility an optional traditional telephone handset can be connected to the GS-MPI005HD
MKII. One handset can be fitted for each phone or one handset can control both phones. The audio to/
from the handset is separate to the audio to/ from the broadcast outputs and an operator can make or
answer a call using the handset and then transfer (divert) this call to the broadcast circuits. If a call is
currently being routed to the broadcast circuits then it can be transferred to the handset.
l Optional Dante®/ AES67 Network Audio Interface
As many broadcaster’s have already adopted Dante® (and some AES67) as their network audio
infrastructure of choice it made sense to future proof the GS-MPI005HD MKII by allowing an optional
Dante®/ AES67 module to be fitted to allow full AoIP connectivity of both the broadcast and off air
‘handset’ audio circuits.