Scantronic 9752 Connect To Texecom Odyssey 3e Live Bell Box

[tigers]

Hi.

We have the following:

Scantronic 9752 Control Panel c/w 9940 Type Keypad

Bell box: Texecom ODYSSEY 3E LIVE BACK PLATE GRADE3

The texecom instructions advise how to connect to scantronic as follows:

Scantronic 9448 to 9800: +12v=A, Bell=B, TR=C, 0V=D, STR=S

However we don't know what A,B,C,D,S connection points are on the scantronic?

We connected it how we thought, but have a permanent tamper on it. Presume it is from control panel end, and not at the actual bell box wiring.

Can anyone help?

Many Thanks

Rachel