How does one investigate call quality issues? I have several (about 8) PBX systems running on CyberLynk VPS servers. I have upgraded them to more CPU, more RAM, SSD Hard disks, and upgraded my customer internet connections to 100mbps, 150Mbps, and one even to 1Gbps to no avail. I continue to have various call quality issues on all the systems with different phones, analog, digital, and have been working on it for more than 4 years. It just never seems to get any better. The only common denominators are FreePBX, Telnyx, and Cyberlink. I need to figure out which component is causing the issue and fix or replace it.
I am looking for help in determining the issue and fixing it. If there is a way to get these to all work together then great, if not I will replace any of the components needed to resolve. Looking for comments on anyone who uses CyberLynk, AWS, Telnet. I have 200 phones on 8 PBX’s and want to expand to 5000-10000 phones but need a robust environment that works reliable and clear.
Telnyx has a TLS connection to AWS so I am thinking that if I setup an AWS server this weekend I can see if its the CyberLynk environment is an issue. I asked them to create a TLS to Telnyx several years ago and they were not interested. My gut instinct tells me the issue is the network between CyberLynk and Telnyx. They are literally in the same city but have ping times much higher then me 500 miles away (i.e. I can pink Cyberlynk, and I can pink Telnyx both much lower pink time then pinging telnyx from my servers at cyberlynk.
Suggestions? Is there an app I can install on my PBX to show me the cll quality and where the issue is?