Tieline is the first GSM enabled codec to provide an auxiliary
data stream over GSM that allows studio engineers to control the
audio input levels of their remote talent. Remote channel on/off
button control can also be activated enabling the studio to have
complete control over the remote talent's microphone over a wireless
link with no distance limitations. If you have GSM service….you
have a broadcast link with remote control.
Tieline offers a Nokia GSM chipset mounted in a Tieline
module which can be slotted into the side of the Tieline Commander
or i-Mix. You can dial from the GSM enabled codec to a standard
POTS landline enabled Tieline codec to establish the high bandwidth
link. The Mono GSM capability has been added to the 15 kHz stereo
over POTS and 20 kHz Stereo over ISDN capability of the new Tieline
G3 codecs.
Standard GSM networks provide data streams of 9600bps. The Tieline
i-Mix and Commander feature a new and an extremely efficient voice
coder called Voice G3 that delivers up to 7.5kHz audio over this
low bit rate stream.
HSCSD(High speed circuit switched data) networks allows users to
send and receive data at speeds of 28.8kbit/sec and 43.2kbit/sec
by bonding up to 4 traffic channels of a GSM network. Tieline's
well known Music algorithm delivers 15 kHz audio over HSCSD networks
with full remote control ability.
Tieline also provides several remote power options including an
in-car cigarette lighter 12 volt power supply, a desktop 8amp hour
UPS Lithium battery or a 2.3amp hour lithium battery module which
slots into the side of the codec and enables broadcasters to set
up anywhere in the field and deliver the equivalent of a POTS or
ISDN broadcast without any wires at all.
Examples of Tieline GSM users and successful tasks:
1. Jim Parman, Operations Director for WRNZ in Danville, KY has
been using the Tieline GSM for football broadcasting. Jim said "it
sounds much better than a plain cell phone, it's very convenient
and it serves our purpose almost all the time. During football season,
the Tieline GSM system is used almost every Friday night. We've
got 4 stations and 4 high schools to cover so someone needs the
Tieline GSM system almost all the time. Most schools are near an
interstate so we know we're going to get a cell phone signal almost
all of the time.
2. Benoit Goffin and Joel Henneton at BXL City Radio in Brussels
are forging a new market of afternoon traffic listeners eager to
avoid the tough traffic spots. Every afternoon at 4:00pm a reporter
from RTL Brussels packs his Tieline codec with a battery and GSM
mobile into a small backpack and heads out into the peak hour fray
with his police scanner in search of traffic stoppers including
breakdowns, accidents, construction areas and highway bottlenecks.
On arrival at the scene, the reporter activates the battery pack
housed in the backpack which powers the codec and then dials back
to a standard POTS landline in the studio connected to another Tieline
codec using the Belgian GSM network operator BASE which supports
HSCSD. The reporter then delivers a live on-the-spot report of the
traffic conditions including informal interviews with police, construction
workers and drivers experiencing the delays.
3. BBC World Service:
Very successful demonstration to the European SM Team & BBC
Monitoring teams.
4. Successful Demonstration to Capital FM London
5. Radio Forth, Edinburgh, Scotland
GSM up to 26,400 with all parties very impressed after 4 1/2 hours
testing, particularly at voice quality on the voice G3 mode. It
was commented how impressive the low frequencies were on music.
Chief Engineer Douglas Paterson was very keen to test further on
his own and the fact that the Orange network went down mid way through
the demo didn't dampen spirits, especially when another engineer
pulled out their Vodafone SIM and we demonstrated standard 9600
baud connection was possible in situations where HSCSD wasn't available.
Were a little sceptical about GSM interference on the audio path
but were unable to find a problem even with extreme testing.
More information is available on Tieline's GSM solution webpage.
Call your local Tieline dealer
for a free demonstration.