Like any other service it pays if you know the basic troubleshooting of a cloud PBX system, although generally all the maintenance and repairs transpire in a remote server level which the service provider regularly checks there are still some bits of troubleshooting that you need to do on site to ensure that your system is working perfectly all the time and avoid inconveniences.
As we all know a cloud PBX system has different configurations and with that different troubleshooting may apply however don’t let this fact put you off, it’s really simple and virtually anyone can accomplish these simple guidelines.
For IP phones
Basic problem of an IP phone is the registration which appears of the LCD display as not registered or NR, this means that your handset is not able to connect to your cloud PBX system, more often than not this is caused by your internet connection, there could have been some jitters, packet loss or delays. What you can do is to restart the IP phone manually by unplugging it from the power source and then reconnecting it or open a web browser and type in the IP address of your router from there you can access the control panel of the IP handset and restart it accordingly.
Also this problem can be caused by an outdated software or firmware version, be sure to update the handset regularly to avoid such inconvenience. Check the physical wirings as well, make sure there are no kinks, bend and damage to any of the cables especially the Ethernet wire. It will also help if you use rack enclosures and any cabinet holders to avoid physical damage on your modem, networking device and cables.
For soft phones
Like any other software that you use there are some occasions that a soft phone will not work properly, whether you are unable to log in into your account to make phone calls or is unable to register its SIP all you need to do is to restart the application or reboot your computer, this usually solves the issue but if it still persist, check your internet connection and make sure that there is no firewall and anti-virus feature in your computer that can block the application from working properly.
Make sure you check the audio codec and the other settings as well, contact your service as to which codec to prioritize and what kind of settings works best with VoIP as it varies from one soft phone to another.
ATA
As for an ATA, all you need to is to restart the unit and usually it solves the problem if not check all the connections, there might be some loose cables and wires that is causing the problem.
If you have done every possible troubleshooting on your end and still an issue persist then contact your service provider because it could be problem on their end.
David Clarkson is a well versed telecommunication engineer with years of background in the industry, In his experience the demand of structuring internal and external communications for small to large scale businesses was perfectly solved by Cloud PBX technology and has recommended it since then.