Details	:
The most common issues you might encounter with your phones may include:

No Dial Tone
Can’t Make /Receive Calls
Distorted Reception
Voice Delays/Jittering
One way Audio
Call Dropouts

Here are some helpful troubleshooting steps:

• Log on to your RingCentral account and make sure it is active.

• Make sure the internet connection is active.  If the internet connection is not working then you need to check with your current Internet Service Provider.

• Check if the cables are snuggly fitted on their ports. Also, try and change the cables as it may also be the cause of the issue.

• Run a Speedtest to check if your connection is stable. http://www.ringcentral.com/support/qos.html This VoIP speed test link can truly determine whether or not the customer is experiencing a RingCentral DigitalLine problem or an underlying bandwidth quality issue. You need to click on the VoIP test after the initial test. 

• Open Firewall Ports on your Router- IP Phones/ATA Adapters need port ranges 5060-5090 UDP with the range of 16384-16482 UDP. Inbound and Outbound should also be set to OPEN   .

• Powercycle the devices. Unplug the devices (Affected phones, routers and modems) for 1 minute and plug back in.

• Isolate internet connection. Remove everything from internet connection except the device and test if issue still exists.

• Do a test call.

If the issue still persist, please contact our customer support at 888-898-4591