


The BT-5 is a 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. 
| Description | BT-5 | 
|---|---|
| Ring voltage | 11v @ 50Hz | 
| REN value | 1.0 | 
| Mic output level | 5mv @ 22Ω | 
| Line output level | 0dBM @ 600Ω | 
| Engaged tone | 600Hz, 250ms on - 250ms off, -13dBM | 
| Acknowledge tone | 600Hz, 2 sec @ -13dBM | 
| Tone level to line | -13dBM | 
| Min line level to hold | 30mA | 
| Time out delay | Normal 28 sec - engaged/busy 8 sec | 
| Voice operated switch | Absence of caller speaking | 
| Amplifier access output | 1 x NPN open collector 40v @ 100mA max | 
| Amplifier busy input | connects to 0v via amp busy | 
| Supply input | 220-240v, 50Hz | 
| Fuse protection | 50mA (F), 250mA (T) | 
| Dimensions | 122(H) x 270(W) x 70(D) | 
| Weight (Net) | 2.00kg | 
| Weight (Gross) | 2.30kg | 
                    CIE-Group Ltd
                    3 Widdowson Close
                    Blenheim Ind. Est.
                    Bulwell
                    Nottingham NG6 8WB
                    UK
                









