RIEDEL Connect Trio User Manual

CONNECT Trio
Dual POTS, ISDN & VoIP Interface

Intelligent and seamless interfacing to the outside world
is the key to success for many intercom applications.
Connect Trio combines three kind of interfaces into one
compact device connecting your intercom system to PSTN
public telephone networks, ISDN or VoIP.

Connect Trio combines two independent audio codecs
in one half-rack/1RU device which can be used in three
different modes: POTS, ISDN and VoIP. This not only
saves rackspace and eliminates the need for additional

equipment, but also provides enhanced exibility to the

intercom installation. These are valuable advantages,
especially for mobile production units.

Analog POTS operating mode

Connect Trio utilizes two telephone hybrids providing a
frequency range of 300 Hz to 3.4 kHz. Advanced DSP
functions guarantee optimal audio quality. Automated
echo cancelling suppresses both line echos from analog
telephone lines and echos from callers’ telephones.
Furthermore, every hybrid provides automatic gain control

(AGC) and an expander for noise reduction.

ISDN operating mode (optional)

In ISDN operating mode two audio codecs are available,
each with either G.711 or G.722 algorithms. The G.722
audio codec provides high quality audio with 7 kHz audio
bandwidth and a coding delay of less than 10 ms. Connect
Trio can transmit and receive two separate audio channels
over one single BRI interface. This allows two separate
connections to different destinations to be established.
Each audio codec uses one ISDN-B channel (64 kbit/s).
It is possible to use different codecs (G.711 or G.722)
for each of the two B-channels. The device automatically
detects the codec capabilities of the remote site and
switches to 3.1 or 7 kHz mode. If there is an incoming call,
the device also selects the correct mode automatically.

Key Features

• Dual analog POTS telephone hybrid

• Dual ISDN audio codec

• Dual VoIP audio codec

• 7 kHz (G.722) and 3.1 kHz (G.711) coding

algorithm

• Digital echo canceling (100ms)

• Automatic Gain Control (AGC)

• Auto format detection for incoming calls

• Auto answer & auto disconnect

• Intuitive user control interface

• Full integration with Artist intercom

systems

• Ability to remote Artist control panels
via ISDN

• SIP and EBU TECH 3347 compliant

VoIP operating mode (optional)

In VoIP operating mode Connect Trio provides two
independent audio codecs, each with G.711 and G.722
algorithms. The device is designed to transport quality
audio with low bandwidth over digital IP-based networks.

To meet the specic demands of high-quality VoIP

communications the device features automated echo
cancelling up to 100 ms. Like all Riedel Voice-over-IP
solutions, Connect Trio establishes the connections via the
SIP protocol and is fully compliant with the Intercom-over-IP
standard EBU Tech 3347.

Artist Integration

Connect Trio is designed to be fully compatible with all
intercom systems and integrates seamlessly with Artist

systems. For direct connection to analog or digital matrix

ports the device provides both transformer balanced
analog and digital AES3/EBU audio I/Os.

CONNECT Trio (Front View) CONNECT Trio (Rear View)

Riedel Communications GmbH & Co. KG | Uellendahler Straße 353 | 42109 Wuppertal, Germany
Phone: [phone] - 90 | Fax: [phone] - 99 99 | www.riedel.net

CONNECT Trio
Dual POTS, ISDN & VoIP Interface

Remote panel

When used with Artist intercom systems you can also

remote control panels via ISDN and dial up your home
studio from your off-site location, thus gaining full access
to all of your home intercom destinations and resources at
minimum line costs.

Operation

The interface can be operated directly from the Director
software. The system can also be controlled via the
integrated keypad and the large full graphic display.
The intuitive user interface makes operation easy. The
integrated telephone book not only stores telephone
numbers but also system settings for each number as well.
Connections can be established directly at the device. If
used with an Artist intercom system, connections can be
comfortably established directly via the intercom control
panel.

Mounting

Each Connect Trio is delivered with a rackmount set for

19” racks as standard. An additional rackmount set for
mounting two units in 19”/1RU is available.

Specifications

Network interfaces: 2x analog POTS
1x ISDN BRI / 2x ISDN-B channel (optional)
1x LAN / 2x VoIP channel (optional)

ISDN protocol: DSS-1 (Euro ISDN), NI-1 (US), Japanese ISDN,
ISDN leased lines
Coding algorithms ITU G.711 (3.1 kHz)
ITU G.722 (7 kHz)

No. of audio codecs 2x (POTS operating mode)
2x (ISDN operating mode)
2x (VoIP operating mode)

POTS operating mode 3.1 kHz analog POTS
Signalisation ISDN Rec. ITU-T J.52
SRT (Statistical Recovered Timing)
ISDN operating modes 3.1 kHz encoded at 64 kbit/s
7 kHz encoded at 48/56 kbit/s (J.52)
7 kHz encoded at 64 kbit/s (SRT)
VOIP operating modes 3.1 kHz (ITU G.711)
7 kHz (ITU G.722)

Control/data interfaces 1x LAN
1x RS232 PC control interface
User I/O (4x TTL, 2x Relays)
Audio interfaces 2x Analog Audio I/O

Digital AES3/EBU audio interface with sample
rate converter

Audio level -3 dBu - +9 dBu (adjustable via con g software)

Frequency range POTS 300 Hz - 3.4 kHz
Frequency range ISDN 50 Hz - 3.4 kHz (ITU G.711)
50 Hz - 7 kHz (ITU G.722)
Frequency range VOIP 50 Hz - 3.4 kHz (ITU G.711)
50 Hz - 7 kHz (ITU G.722)

Power 12V AC (external power supply) / 10W / no fans
Dimensions (W x H x D) 220 x 45 x 220 mm (1/2 19”, 1RU)
Weight 1.7 kg

Approvals CE, UL, FCC

IP

Network

AES3/EBU

a/b

SIP

S

0

ISDN

POTS

Riedel Communications GmbH & Co. KG | Uellendahler Straße 353 | 42109 Wuppertal, Germany
Phone: [phone] - 90 | Fax: [phone] - 99 99 | www.riedel.net

3rd Party

IP Codecs

AES3/EBU

S

0

ISDN Reporter Set

G.722