DISCONTINUED 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
Headphones 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
POTS Tieline Music, MusicPLUS, Voice G3* and Uncompressed audio
ISDN G.711, G.722, Mpeg Layer 2, MPEG, Tieline Music, Tieline Music Plus
GSM Tieline Music & Tieline Voice G3*
X.21 G.711, G.722, MPEG Layer 2, Tieline Music, Tieline Music Plus
IP G.711, G.722, MPEG Layer 2, PCM, Tieline Music, Tieline Music Plus and Tieline Voice G3*
3G/4G G.711, G.722, MPEG Layer 2, Tieline Music, Tieline Music Plus and Tieline Voice G3*
Module Interfaces
4G-LTE Two versions available supporting different wireless networks globally. Accepts full sized SIM cards.
4G USB USB module for connecting compatible 4G-LTE modems
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.
IP Ethernet port TCP/UDP, SIP, over LAN, WAN, open internet
ISDN 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
X.21 DB15 male connector
Satellite 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
LAN 10/100 base T RJ45 connector
Serial RS232 up to 115kbps with or without CTS/RTS flow control Female DB9 Connector
RS232 Data interface port can be used as a proprietary data channel
GPIO Relay Controls
Inputs 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)
Outputs 2x Outputs: floating solid state switching 48V 100mA
Operating Temperature 5°C to 45°C (40°F to 115°F)
Power 12V DC, 1A (without plugin modules) 4 PIN XLR male connector
Dimensions 216 x 218 x 7.5mm or 8.56 x 8.58 x 2.95 inches
Weight 1.2kg or 4Ibs


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