To use the Jablotron Oasis Alarm system with the CQ5 dialler the following wiring should be used.

The power is derived from the alarm panel using the U+ and GND terminals. The default behaviour is for the alarm to pull the IW terminal to GND when the alarm sounds which is ideal for connection to IP1 on the Priory Access CQ5 alarm dialler. The alarm dialler is available here:
CQ5 4G/5G GSM Alarm Dialler for Burglar Alarms