Tieline Commander G3 Rack Audio Codec



The 2RU Commander features two balanced XLR inputs with both front and rear panel headphone outputs and mic inputs. It also has four front panel PPM meters that can display send, return or selected channel audio levels. The screen features real time link information and all controls are available at a touch of a button, or they can be locked out.

The low-cost 1RU Commander is the perfect set and forget IP STL or audio distribution.codec. It includes all the functionality of the 2RU Commander with front panel status LEDs for power, audio, Telco interface status and framing. It can also be programmed and controlled using a PC-controlled GUI that emulates the front panel operations of the 2RU version

Free PC Control Software

2 FREE software packages are supplied with each Tieline Commander G3 rack-mount codec. The Tieline ToolBox PC software package provides the ability to configure your codec to suit each broadcast.

The TLG3 GUI software controller emulates the hardware front panel of the 2 RU Commander G3. It can be used to control 1RU or 2RU codecs using USB or RS-232 serial connections, or either local area networks or the Internet. This advanced software GUI can control all normal codec functions such as dialing, menu navigation, audio monitoring and level controls..

Digital AES/EBU Inputs = Unsurpassed Audio Quality

Commander G3 IP codecs offer a choice between analog or digital input modules – so now you can capture crystal clear digital audio and keep it in the digital domain using Tieline’s AES/EBU input/output modules.

You can choose either an analog two input/output card with XLR connectors or an AES/EBU two input/output card on XLR connectors. AES/EBU clock choices include internal clock, external AES/EBU clock and external word clock. Tieline has also implemented an automatic failover from the selected external clock to the internal clock in the event of an external clock failure.

When purchasing any TLR300B codec you can choose any single input/output card and it will be included in the price of the codec (i.e. there will be no additional cost to the rack-mount price for the first card you choose).

  1. Analogue 2 in 2 out interface (Part No: TLANA2IN2OUT)
    Analog input card for Rack Mount Codec- Analog Commander Rack Mount codec input card. Featuring 2 input and 2 output on XLR connectors plus balanced Aux in/out on 6.35mm (1/4″) jack. Balanced Aux out may also be used as a headphone out.
  2. AES EBU 3ID interface (Part No: TLAESEBU3ID)
    Digital Input Card for Rack Mount Codec:- AES/EBU Digital Card with 2 in and 2 out balanced AES3 on (XLR) plus unbalanced (BNC) AES3 (jumper selectable) with unbalanced word clock input as AES3 output sync reference.

Digital Input Card for Rack mount codec- AES/EBU Digital card with 2 in and 2 out balanced AES3 on XLR connectors plus AES balanced silence tone reference input as AES3 output sync reference.

Redundancy through Automatic failover

This powerful software option provides automatic switching from one network to another in the event of a link failure. For example, if your IP link fails it can automatically switch to a backup POTS, ISDN or 3G link. This provides great peace of mind for studio-to-transmitter links and live remote broadcasts in particular.
Flexible Connections and Control

All Commander IP codecs feature serial, USB and LAN interfaces. Two GPIO relay control inputs and two outputs (expandable to 8 using the optional Tieline CAN8+8 relay box) offer a variety of internal audio matrix routing and external machine controls. Front panel hotkeys can be programmed to trigger relay and routing state changes, or external relay devices can be interfaced to trigger machine control at either end of your link. RS-232 or raw control data can also be sent via the codec serial port and delivered to the other end of your codec link for external machine control.

Commander G3 is still the only codec to enable control of remote codec audio inputs from the studio, so your announcers no longer have to worry about understanding correct audio input levels. You can control one remote audio input or gang all remote audio inputs to a single control in the studio.



  • 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 fully featured Graphic User Interface (GUI) for local programming and control of codecs.Your choice of analog or digital AES/EBU input/output modules.
  • All Tieline codecs offer 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 and 15kHz stereo at 64kbps.
  • 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).
  • Comprehensive and configurable communications facility with dedicated buttons for local and full-duplex 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 Specifications

Analogue Audio Specifications

Analog Audio Input card – (optional card)
2x Female XLR and 1 x 6.35mm (1/4 inch) jack Aux balanced

Analog Audio Outputs – (optional card)
2x Male XLR and 1 x 6.35mm (1/4 inch) jack Aux balanced

AES/EBU Audio card – optional 1
1 x stereo Female XLR input and 1 Stereo Male output with Word Clock on BNC

AES/EBU Audio Card – optional 2
1 x stereo Female XLR input and 1 Stereo Male output with STR Ref Clock

Headphones – on all card options
1 x 6.5mm (1/4″) Jack at rear shared with Aux out

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 Wideband (TWB) & Tieline Voice G3

G.711, G.722, Mpeg Layer 2, Mpeg, TWB

Tieline Wideband (TWB) & Tieline Voice G3

G.711, G.722, Mpeg Layer 2, TWB

Tieline Wideband (TWB) & Tieline Voice G3

Tieline Wideband (TWB) & 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

Front Panel Interface

1 RU Rackmount
12 x Status LED, 1 x Red = Power
1 x Green = Audio is active and present
4 x Green = Input and audio outputs are active
2 x Green = Aux input and output audio is present
2 x Orange CXN 1 and 2 are connected
Recessed pin hole reset button (Not fitted on 2RU)

2 RU Rackmount
Keypad 20 Key

4 x 20 line LCD

4 x configurable Tx and Rx indicator LCDs

Level indicators
4 x 8 level LEDs. Configurable source with selector button.

Channel On/Off
On/Off, Gain controlled and matrix router configurable

Matrix Router configurable

Microphone Input
1 x 6.35mm (1/4inch) jack Aux balanced

Headphone Monitoring
1 x 6.35mm (1/4inch) shared with Aux out with volume and mix adjustment

Send Return Mix
Mix between audio send/return or a mix of both

4 x Programmable hotkeys
Matrix router configurable

Send Return Mix    
Switch between audio send/return or a mix of both

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
5°C to 45°C (40°F to 115°F)

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

1 RU Rackmount Codec     

48.3cm x 24.6cm x 4.5cm or 19 x 9.68 x 1.75 inches

1.87kg or 4.12Ibs

2 RU Rackmount Codec

48.5cm x 27.3cm x 8.8cm

2.83kg or 6.5Ibs

Product Resources

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