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BT-8
Store/Forward Zoning Interface
List Price
£1,550.68
$0.00
€0.00
incl. VAT
Product Description
The BT-8 is a Store/Forward Zoning Direct Paging Interface which enables staff to make public address announcements from the comfort of their own desk telephone.
The free-standing unit acts as an interface between the analogue telephone system and the PA.
Both the BT-5 & BT-8 free standing units allow staff to dial into the Public Address (PA) system from their desk. The BT-5 & BT-8 act as a network between the telephone system and the PA and allows each individual with the opportunity to contact other members of staff or to make general announcements. This avoids contact to a busy reception/switchboard with a request to put a call out.
To Install the units, simply connect to a PA amplifier and an available telephone extension socket (BT5) or a building’s telephone exchange (BT8). A paging announcement is available by simply dialling into the unit’s extension.
Please note: the BT8 is not approved for direct connection to the BT network. Under general approval NS/G/23/J/100003 it may be connected to a port on a telephone switch (PABX). This unit should only be used with a switchable amplifier input.
CASE STUDY
Twinings Tea - PA and Background Music Rack Design and Build
Specification Sheet
- Click to download: bt5_bt8_spec.pdf
Manual
- Click to download: bt8_manl.pdf
- Operated by simply dialing the BT8 extension number
- Supplied with an IEC mains lead
- Can be used to broadcast live announcements
- Additional facility enables the user to pre-record an announcement. This reduces the risk of feedback where the telephone is adjacent to a loudspeaker
- When connected to a telephone system with MF signalling, the BT8 enables the user to select up to eight zones via the telephone keypad
- An internal selector determines if the recorded message is played once or twice
- Can be wired into any two-wire analogue extension port via a designated master extension socket
- Another option is to connect the unit to the paging port available on most modern telephone switches. However, they are not designed to operate on keyphone system extension ports
- Outputs are selectable from line or microphone level
- Signal output and zone select connections are via a 25 way D connector
- Compatible with our BDM300 range of desk microphones (connected via the BMS25 socket box supplied with the microphone)
- We recommend using our B81R relay unit for the zone select switching
| Description | BT-8 |
|---|---|
| Ring voltage | 20~70v @ 17~25Hz |
| REN value | 1.0 |
| Mic output level | 2.5mv @ 22Ω |
| Line output level | 0dBM 775mv @ 220Ω |
| Time out delay | Recorded 55 sec - live 2.5 mins |
| K break | Interruption of line current |
| Voice operated switch | Absence of caller speaking |
| DTMF tone | Sent from caller to terminate the call |
| Zone select outputs | 8 x NPN open collector 40v @ 100mA max |
| Amplifier access output | 1 x NPN open collector 40v @ 100mA max |
| Amplifier busy input | Opto-coupled 12~30v 7mA max AC/DC |
| Supply input | 220~240v, 50Hz, 60Hz |
| Fuse protection | 20 x 5mm 250mA (T) |
| Dimensions | 122(H) x 270(W) x 70(D) |
| Weight (Net) | 3.00kg |
| Weight (Gross) | 3.45kg |
