Wiring an Optima G4 Alarm panel to a Reson8 bell box using existing 4 core cable

[BernieA]

I am replacing an existing old bell box with a Reson 8 bell box 8EP420. My alarm panel is a Optima G4. They are connected via a 4 core cable.
The existing panel wiring is as follows:
Panel Bell box
Strobe+ (no connection)
A link between T and A
Strobe- (yellow)
A (blk) SCB
D (red)Bell+
B (blue) Bell-

The Reson8 install guide only shows a 5 wire system:

Panel Bell box
Strobe- Stb-
B (Bell-) Trig-
A- Hold off -
D (Bell+) Hold off +
T- Rtn -

I cant work out how I should wire the Reson8 from this.

Any Alarm installers able to offer advice?

 

[UNG]

In short you can't do it with a 4 core cable and have a fully functioning external sounder

 

[BernieA]

The previous bell box worked fine. I think it was just lacking the added security of anti tamper. Can this one be wired the same?