You can set 6 alarm numbers.
The command is:
[DISARMING][#][1][????????][#]
[DISARMING][#][2][????????][#]
[DISARMING][#][3][????????][#]
[DISARMING][#][4][????????][#]
[DISARMING][#][5][????????][#]
[DISARMING][#][6][????????][#]

You need to set the type of the number.
The command is:
[DISARMING][#][?][2/3/4][#]
Here "?" is the group of the number 1-6.
"2" means only call.
"3" means only send SMS.
"4" means call and send SMS.

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When the system call you, you can:
press "1" to listen your home for 20 seconds
press "2" to ringing the siren
press "3" to close the siren
press "4" to arm the system
press "5" to disarm the system
press "#" to confirm and hang up