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GLENSOUND TELEPHONE BALANCING UNITS AND DIGITAL HYBRIDS

This range extends from line-powered telephone balancing units through to digital telephone hybrids, to cater for a variety of situations where interfacing to an analogue PSTN (POTS) telephone line is required.

As well as integrating the audio from a phone line into a mixing desk, Glensound TBUs and hybrids are used to pre-fade and cue feeds by presenters or camera operators.

GS-CUT101 - Line Powered Telephone Line Coupler

This provides a balanced audio output when connected to an analogue PSTN (POTS) line. It is often used to provide cue or monitoring feeds using a normal telephone line. As the unit receives its power from the telephone line, there is no requirement for battery or mains power. The casing is aluminium with overhang protection to protect the controls and nylon-dipped base and lid to prevent chipping and peeling. A heavy-duty plastic belt-clip is fitted.

The front panel has a heavy-duty on-hook / off-hook push button. This transfers the audio from the incoming phone line/handset connection, to the audio output. If the handset remains off-hook, both ends of the phone call will be output from the audio output. There is a two-position switch to enable an audible ringer. For live microphone environments it may be undesirable to have an audible ring so it can be turned off. A red LED indicates an incoming call.

The left side has two RJ11 6P6C sockets, which accept RJ11 6P2C plugs, one for the telephone line, the other for the handset used for making or receiving calls, prior to the coupler taking the call over when the button on the front panel is pressed. A switch selects which cable pair is used for the connection to the line, either pins 3 and 4, or 2 and 5. This gives flexibility with phone networks around the world. The rear panel has a balanced, 3-pin male XLR for the audio output at a typical level of -6dBu. The maximum output level is +6dBu.

Dimensions: 152 x 73 x 41 (d x w x h)mm, excluding belt clip. Weight: 340g.

GS-PASTE201 - Line Powered Telephone Balancing Unit

This connects professional, balanced, audio equipment to analogue telephone lines, providing independent two-way audio. This would typically allow a phone call to be taken onto a broadcast mixer. As the unit receives its power from the telephone line, there is no requirement for battery or mains power. The casing is aluminium with overhang protection to protect the controls, and nylon dipped base and lid to prevent chipping and peeling. A heavy-duty plastic belt clip is fitted.

The front panel has a heavy-duty on-hook / off-hook push button. This transfers the audio from the incoming phone line/handset connection, to the audio output. If the handset remains off-hook, both ends of the phone call will be output from the audio output. A two-position switch enables an audible ringer; for live-microphone environments it may be undesirable to have an audible ring so it can be turned off. A red LED indicates an incoming call.

In order to obtain the best side-tone suppression from the GS-PASTE 201, it is necessary to match the impedance of the telephone line. The front panel has three separate controls to adjust to achieve the optimum line balance and two rotary controls to adjust the audio received-level and send-level, both +/-10 dB (instructions are printed on the unit). A tri-colour LED indicates audio level, blue is below -10dBu, green is between -10dBu and -3dBu, red is above -3dBu.

The rear panel has a recessed button that activates a white noise source, which simplifies the process of balancing the connected phone line; the controls are adjusted until the minimum white noise is heard on the output. A 3-pin female XLR connector provides a transformer-balanced audio input, with a nominal input level of 0dBu. Maximum input level is +18dBu. The input includes a compressor/limiter. A 3-pin male XLR provides a transformer-balanced audio output with a nominal output level of 0dBu. Maximum output level is +6dBu. There are two RJ11 6P6C sockets (6P2C compatible) , one for the telephone line, the other for the handset used for making or receiving calls, prior to the coupler taking the call over when the button on the front panel is pressed. A switch selects which cable pair is used for the connection to the line, either pins 3 and 4, or 2 and 5.

Dimensions: 153 x 103 x 45 (d x w x h)mm, excluding belt clip. Weight: 415g.

GS-PASTE201/R1, GS-PASTE201/R2 - Rack Mounting Versions

Two rack-mounting versions of the GS-PASTE201 are available. Both are fitted in 1U rack-mounting cases. The GS-PASTE201/R1 has a single unit, the GS-PASTE201/R2 has two balancing units.

ATOMIC COPPER 29 - Digital Telephone Hybrid With Twin DSP

This is Glensound's flagship digital hybrid. Two digital signal processors are used; DSP1 is dedicated to the input/output process, DSP2 is dedicated to control the echo-cancellation routines. The twin DSP system results in a separation level, between the send and receive signal, better than 76dB. Three models are offered, rack-mounting single and dual hybrids and a desktop single hybrid version.

DSP1 provides a compressor limiter to manage the incoming analogue and digital audio, so as to not overload the telephone line. The automatic gain control maintains a constant caller-level to the studio, however, if there is an incoming audio signal into the hybrid from the studio, then the caller-level can be ducked, to stop the caller talking over a presenter. Incoming and outgoing audio is put through band-pass filters to remove unwanted artefacts. DSP2 provides a finely-tuned echo cancellation algorithm. A second algorithm in the echo canceller produces an internal mix-minus.

The front panel has two eight-segment bargraph PPM meters with LEDs from -20 to +12dB. Two recessed, screwdriver-adjusted, rotary controls offer level adjustment of +/- 10dB for both send and receive audio. A single illuminated push-button is used for on hook/off hook, which flashes when the line rings. A single press answers a call and transfers the audio to the main input and output. A press and hold hangs up the call. A rotary dial, protected behind a removeable cover, is used for worldwide line-impedance matching.

A bank of miniature DIP switches, behind a secure perspex panel, offers the following on/off or toggle functions: Network echo canceller; acoustic echo canceller; auto answer; auto answer (two rings or eight rings); DAA full scale 0dBm (normal) or +6dBm; tone disconnect; K-Break disconnect; call ducking; receive AGC; receive noise gate; alternate 'aux output function' (receive audio, or send+receive mix). An LED indicates power-on or a fault state, based on number of flashes. There is also a recessed reset button.

On the rear panel there are two balanced, 3-pin female XLR analogue inputs, each with a microphone/line switch. An AES digital input is provided by a 3-pin XLR, sampling-rate input range 32-192kHz at 24 bits, with internal sample-rate conversion to 48kHz. Full scale is +18dBu. Two 3-pin male XLR connectors provide analogue outputs, main and auxiliary. The AES digital output is provided by a 3-pin male XLR, this follows the sample-rate of the digital input; if there is no digital input, the sample-rate is fixed at 48kHz. Full scale is +18dBu. There are two RJ11 6P6C sockets (6P2C compatible); one for connecting the telephone line, the other for connecting the handset used for making or receiving calls, prior to the coupler taking the call over when the button on the front panel is pressed. A 15-pin D-sub connector offers full setup and system control, together with eight closing-contacts for basic functions.

Analogue inputs: -35dB/+20dB maximum, microphone/line, unity gain, 100k ohms. Analogue outputs: +18dBu maximum, 50 ohms. Line isolation: 5000V. Bandwidth: 125Hz to 3.6kHz, -3dB. Line separation: Better than 76dB, audio in to audio out, with 0dB pink noise. Power source: 100-240V AC via IEC inlet.

Included accessories: Power cable.

ATOMIC COPPER 29/S - Rack Mounting

This has a single hybrid. Dimensions: 1U x 220mm deep. Weight: 1.76kg.

ATOMIC COPPER 29/SD - Desktop

This has a single hybrid. Dimensions: 1U x 220mm deep. Weight: 1.76kg.

ATOMIC COPPER 29/T - Rack Mounting

This has two hybrids. The controls on the front and rear and the connections on the rear, other than the power inlet, are duplicated. Dimensions: 1U x 220mm deep. Weight: 1.96kg.

  Description Price (£) Add to basket
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GLENSOUND GS-CUT101 TELEPHONE LINE COUPLER Line powered   Stock code: 28-7861
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£180.00
GLENSOUND GS-PASTE201 TELEPHONE BALANCING UNIT Line powered   Stock code: 28-7862
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£310.00
GLENSOUND GS-PASTE201/R1 TELEPHONE BALANCING UNIT Line powered, single TBU, rack mounting   Stock code: 28-7863
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£350.00
GLENSOUND GS-PASTE201/R2 TELEPHONE BALANCING UNIT Line powered, dual TBU, rack mounting   Stock code: 28-7864
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£650.00
GLENSOUND ATOMIC COPPER 29/S TELEPHONE HYBRID Digital, single unit, rack mounting   Stock code: 28-7865
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£650.00
GLENSOUND ATOMIC COPPER 29/SD TELEPHONE HYBRID Digital, single unit, desktop case   Stock code: 28-7866
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£650.00
GLENSOUND ATOMIC COPPER 29/T TELEPHONE HYBRID Digital, dual unit, rack mounting   Stock code: 28-7867
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£1,250.00