Tieline Commander G3 Field Audio Codec




Tieline Commander G3 field and studio rack-mount IP codecs are used by thousands of broadcasters around the world every day for remote broadcasting, studio-to-transmitter links (STLs) and studio-to-studio audio distribution.

Recognized as the world’s most powerful and reliable codecs, the Commander G3 can connect over a variety of network transports. Featuring interchangeable module slots, they can be customized to connect over a variety of connections according to each broadcaster’s unique requirements.

All Commanders feature two module slots, which accept your choice of hardware plug-in modules. This allows broadcasters to send high quality, low-delay live audio over IP, 3G/3.5G, POTS/PSTN analog telephone lines, ISDN, X.21, GSM and B-GAN satellite networks.



  • Two expansion slots which accept your choice of IP, 3G/3.5G, POTS/PSTN, ISDN, X.21, GSM and B-GAN satellite plug-in modules.
  • A suite of algorithms to suit all your live broadcasting requirements including Tieline’s famous Music, MusicPLUS and Voice G3 algorithms – as well as industry standards such as G.711, G.722 and MPEG Layer II.
  • Tieline’s loss-tolerant MusicPLUS algorithm provides up to 20 kHz stereo audio quality with 20ms coding delay at bit rates as low as 96kbps – making it ideal for today’s IP and 3G networks.
  • Tieline Music can deliver up to 15 kHz FM quality mono audio at bit-rates as low as 24kbps, with only 20 milliseconds encoding delay.
  • Tieline Voice G3 is optimized to deliver up to 7.5 kHz quality audio at bit-rates as low as 9.6 kbps.
  • A configurable 14 x 8 cross-point Digital Matrix Audio Router (DMR) for customizing your cue, intercom, talkback and audio routing and send any audio input to any audio output.
  • Comprehensive and configurable communications facility and buttons for live local and studio-to-remote communications.
  • Pre-configured and adjustable mono, stereo, mono/IFB and dual mono connection profiles
  • 3 input and 3 output digital mixing capability, including 2 balanced mic/line inputs, 1 unbalanced auxiliary in/out, and 2 balanced outputs.
  • On-board relay and RS-232 control system for local and remote control of equipment at either end of your codec link
  • Full control of a remote codec’s audio input levels from the studio.
  • Free Tieline Toolbox PC software configuration and control software, offering configuration, audio routing and input control of your local and remote codec.
  • Automatic connection failover.

Technical Specification

Technical Specification

Analogue Audio Specifications

Audio Inputs
2x Female XLR and 1 x RCA Aux

Audio Outputs
2x Male XLR and 1 x RCA Aux

2 x 6.5mm (1/4″) Jacks

Audio Input Impedance
High Impedance – > 5K ohm

Output Impedance
50 ohm Balanced

Clipping Level
+18dBu (input and outputs)

Frequency Response
20 Hz to 15kHz over POTS/GSM and 20Hz to 20kHZ over ISDN

Total Harmonic Distortion
<0.01% at +4dBu

Signal To Noise Ratio
Better than 84dB at +4dBu

Sample Frequencies
A/D & D/A Converters 24 bit Sigma-Delta

IP Sample Frequencies
16kHz, 24kHz, 32kHz, 48kHz

3G Sample Frequencies
16kHz, 24kHz, 32kHz, 48kHz

POTS Sample Frequencies
16kHz, 32kHz

ISDN Sample Frequencies
16kHz, 24kHz, 32kHz, 48kHz

X.21/V.35 Sample Frequencies
16kHz, 24kHz, 32kHz, 48kHz

X.21/V.35 Data interfaces
Up to 384KBits/S

GSM Sample Frequencies
16kHz, 32kHz

Compression Algorithms

Tieline Music, MusicPLUS, Voice G3 and Uncompressed audio

G.711, G.722, Mpeg Layer 2, MPEG, Tieline Music, Tieline Music Plus

Tieline Music & Tieline Voice G3

G.711, G.722, MPEG Layer 2, Tieline Music, Tieline Music Plus

Tieline Music, Tieline Music Plus and Tieline Voice G3

Tieline Music, Tieline Music Plus and Tieline Voice G3

Module Interfaces

3G – (Software module)
3G GSM/UMTS/HSDPA/HSUPA or EVDO Rev 0/Rev A internal cards available or broadband cell phone via Tieline USB master module.

3 x USB master inputs

IP – (Software module)
TCP/UDP, SIP, over LAN, WAN, open internet, WiFi, WiMax

Basic Rate S/T or U modules with up to 2 B channels supported per module with RJ45 interface

POTS/PSTN/Analogue Telephone
POTS Modem module with RJ11 connector

HSCSD 14,400 to 28,800bps and CSD 9600bps (requires sim card)

DB15 male connector

External BGAN or Inmarsat Satellite phone can be connected to the ISDN module or IP LAN port

Data and Control Interfaces

USB Slave
USB-1.1 slave

USB – Master optional module
USB 1.1 Master

10/100 base T RJ45 connector

RS232 up to 115kbps with or without CTS/RTS flow control Female DB9 Connector

Data interface port can be used as a proprietary data channel

Differential CAN, 6 pin female DIN connector

GPIO Relay Controls

2 x Inputs: Contact Closure to ground with internal 5v feed at 5mA 0.15″ pitch male pheonix connectors. (12V power connector has two relay inputs for power sensing one independent and 1 duplicated with phoenix connector)

2x Outputs: floating solid state switching 48V 100mA

Relay Expansion
Expandable to 8 in and 8 out using optional CAN 8+8 product.


Operating Temperature
5ºC to 45°C (40°F to 115°F)

12V DC, 1A (without plugin modules) 4 PIN XLR male connector

216 x 218 x 7.5mm or 8.56 x 8.58 x 2.95 inches

1.2kg or 4Ibs

Product Resources

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