If server didn't receive one or more DEX reports from the machine, it will put machine into Offline Status (showing Red cross).
Offline normally caused by
1: No Power
Some may unplug your machine by accident or the whole site lost power.
2: Receiption issue
Poor signal coverage may cause offline, if signal less than 0 or showing 99 (no signal). it may cause offline. Espeically if machine big buidings.
Solution:
- Contact us to try another carrier sim, for example, if already have telstra, try Vodafone sim. Most of the case it helped
- Get an high gain antenna from us. We send out 3dbi antenna by defaut which good enough for most places. But you can pay bit extra for a high gain antenna wich increase 50% of the signal. or go to electronic shops to buy an 3G/4G antenna for out door use (take old antenna and show them the connector)
- If above steps didn't help and your DTU is 3G (With 3G label on top) , You can call us to upgrade it to 4G device which normally get better receiption.
- In extream case, you may never got good receiption even with 4G device, then should think of move machine to a better place.
3: Network Down
Unfortunately, Mobile network not as stable as we thought. and they doing maintances and upgrade here and there all the times.
Almost every time they doing that cause SIM get no service. In this case , you don ' t need do anything , machine will back online in few hours automatically.
Sometime, you may need to do a hard reset (Power off/on ) the machine after network service recover, otherwise the sim will remain offline.
4: Broken antenna
Check the antenna cable see if any damage. or antenna itself. Sometimes, people did play with them.
5: Broken DTU
If no LED on the DTU, it may be burnt. Contact us for replacement