Telephone Hybrids
Telephone Hybrids Contents |
| Introduction |
| Analogue - HY-03 Products |
| Digital - DHY-03 Products |
| Analogue or Digital? |
Outstanding Quality From Industry Standard
Telephone hybrids, or telephone balance units (TBUs) provide the interface between professional audio equipment and the public telephone network. They provide protection for your equipment and the public telephone lines, allowing for varying line signals and line conditions. Automatically cancelling out the unwanted signal they also facilitate two-way communication down a single telephone line.
Each hybrid has a telephone line connection, a handset connection and separate terminals for audio input and output from a broadcast mixer, or other professional audio source.
A large proportion of Sonifex hybrids are used in radio and television broadcasting applications for allowing external callers to be connected to the studio mixing console. Most of the other units are supplied to communication operations for allowing extremely effective conversion between 4-wire audio circuits and standard telephone lines.
A ringing detector can be used when you need to answer a call automatically, for instance, if a journalist files a report to a tape recorder over a telephone line, the call can be picked up after a set number of rings by the ringing detector. Both the HY-03 & DHY-03 have a built in ringing detector that is enabled by one of the configuration settings switches on the rear panel.
Back to Telephone Hybrids Contents >Analogue |
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| HY-03 | Automatic Analogue TBU, Free Standing |
more >> |  |
| HY-03S | Automatic Analogue TBU, Rack Mounted | more >> |  |
| HY-03T | Twin Automatic Analogue TBU, Rack Mounted | more >> |  |
| HY-03DTD | Dial Tone Detect Add-on Board | more >> |  |
| HY-03CON | Front Panel Conversion Kit, HY-03S to HY-03 | more >> |  |
| HY-03SCON | Front Panel Conversion Kit, HY-03 to HY-03S | more >> |  |
| HY-03TCON | Front Panel Conversion Kit, HY-03 or HY-03S to HY-03T |
more >> |  |
| Back to Telephone Hybrids Contents > | |||
Digital |
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| DHY-03 | Automatic Digital TBU, Free Standing | more >> |  |
| DHY-03S | Automatic Digital TBU, Rack Mounted | more >> |  |
| DHY-03T | Twin Automatic Digital TBU, Rack Mounted | more >> |  |
| DHY-03EC | Automatic Digital TBU, Eurocard | more >> |  |
| DHY-03CON | Front Panel Conversion Kit, DHY-03S To DHY-03 | more >> |  |
| DHY-03SCON | Front Panel Conversion Kit, DHY-03 To DHY-03S | more >> |  |
| DHY-03TCON | Front Panel Conversion Kit, DHY-03 Or DHY-03S To DHY-03T |
more >> |  |
| DHY-03CONF | Conference Cable To Connect 2 x DHY-03 Units | more >> |  |
| DHY-03RLY | Latching Handset Relay Option For DHY-03, S and T |
more >> |  |
| Back to Telephone Hybrids Contents > | |||
Analogue or Digital?
Sonifex offers two different hybrid units - the HY-03 analogue TBU and the DHY-03 DSP based TBU.
The analogue HY-03 hybrid is suitable for most general telephony applications and is often used in radio and TV stations, dealing floors and bingo halls. The HY-03 can be used for any application where a clean telephone signal is required and the line is not subject to signal delay.
The DHY-03 offers near perfect performance, using DSP power to dramatically improve the unit’s operation. The DHY-03 offers the features of the HY-03, but has some other benefits:
- Echo cancellation is possible and distortion of other mixed signals is greatly improved.
- Digital hybrids are more tolerant to fluctuating line conditions and are especially suitable for dealing with calls that have a slight signal delay, for example, satellite and conference calls. The DHY-03 can recall signals from its memory buffer and allow for these delays without impairing performance.
Note that both of these products are operating on analogue telephone lines, not ISDN digital lines.
The “analogue” and “digital” refer to the processing used in the units.