I’m having a systematic problem with Aastra 6731i phones dropping in and out of service. All of the phones are remote, with FreePBX in a datacenter. Most users are going out over the internet, but some are using private transport.
The phones all exhibit the same symptoms: one or more phones in each location will say “no service”, but after a few minutes, they will regain connection. Sometimes it requires a reboot of the phone to regain service. While the phones are out of service, they cannot make or receive calls. However, sometimes, a phone may drop service mid-call, but the conversation stays alive.
I’m pulling my hair out here and I’ve tried several things to solve the problem. Namely, I’ve changed extension option “Qualify” from ON to OFF. Now I’ve changed the setting to 120000. I changed the setting because I thought that all of the qualification messages may have been overloading the server. I’m still waiting to see if this change will make any difference. BTW, there are typically 6 phones/extensions on the remote systems.
Does anyone have any ideas? I’ve called Aastra, but they’re unfortunately little help, where I was actually hung up on when I asked to speak with a different support agent. Very frustrating.
I’ve also checked internal network problems, but given that this is systematic, on several systems, I don’t believe this to be the case.
Thanks in advance for any advice.