The Apex Destiny 6100 uses the 6160 keypads, which have a mic and speaker inside. You will need a Seperate cat5 or 22/4 shielded to the keypad location to use them. While programmng the alarm, remember to activate the RS-232 port 2-way option.
The siren can be modified into a speaker for connection to the voice output or connected to the on-board relay for activation. The relay will have to be programmed accordingly.
I would install a speaker somewhere central in the house for the monitor beep/speech feature. This is has been very useful to everyone I have installed or programmed for.
You need to have the optional rs232 interface and the Elan SC-4 and you are ready to program.