BOXTEL MKII CONNECTION PROCEDURE
| BOXTEL MKII CONNECTION PROCEDURE
31
12.10
CONNECTION TO TELCO MODULES OR REMOTE DEVICES (GPIO
REMOTE)
The remote interface of BoxTel MKII and BoxTel MKII GSM is based on a 9 pin SubD connector and features the
following functions:
1. Remote telephone line hooking
2. Incoming call signal
The interface has been designed for rapid connection to the Oxygen 5 and Oxygen 7 consoles by Axel Technology.
12.10.1
Signal of incoming call via Telco
A Boxtel internal optocoupler (Pin 8 = collector and Pin 1 = emitter - indicated by
A
in the figure below) provides a low
resistance closure (about 150 Ohm) whenever the line “rings”. The maximum current allowed is 10mA.
SubD
– 9p
Male connector
Pin 1
GND
Pin 2
N.C.
Pin 3
N.C.
Pin 4
Base of the HOOK relay drive
transistor
Pin 5
Short circuited internally with Pins 6
and 9
Pin 6
External power supply input (+6 V)
Pin 7
N.C.
Pin 8
Ring optocoupler collector
Pin 9
Short circuited internally with Pins 6
and 5
A
call indicator LED
(RING LED) can be connected externally through a
470
Ohm
resistor
(see R in Figure 1). In this
case
pin 6
of the interface must be
powered
by means of + 6 V DC voltage.
SubD
– 9p
Male connector
Pin 1
GND
Pin 2
N.C.
Pin 3
N.C.
Pin 4
Base of the HOOK relay drive
transistor
Pin 5
Short circuited internally with Pins 6
and 9
Pin 6
External power supply input (+6 V)
Pin 7
N.C.
Pin 8
Ring optocoupler collector
Pin 9
Short circuited internally with Pins 6
and 5
The same internal optocoupler A can directly drive an external signal light (such as
Mr. Light
by
Axel Technology)
. In
this case pin 8 of the interface must be connected to the central pin of the connector of the Mr. Light lamp.
1
6
5
9
1
6
5
9