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In your pjsip trunk you must have set authentication to inbound which results in incoming invites being challenged for authentication which voice service providers don't like.

Then show the logs so we know what's happening

Why does it no longer function?

Anybody seen this yet? Sangoma will revoke their signature on Clearly IP’s module signing key, which will probably result in Clearly IP's Freepbx modules no longer working by the morning of February 10, 2020...

I have noticed that firmware version V84 causes a T23G to be noticeably slower than firmware version V81. I can replicate this on all T23Gs I tried it on. The menu is slower to navigate, as well as when you press digits when the phone is on hook, there is often, not always, a delay as to when...

Does Skyetel allow for off-net E911, meaning will they allow me to set an E911 address for a DID I have with another provider?

Glad that it was only what looks like a mistake. It's definitely sad to see many people go and Sangoma and the FreePBX forum have surely taken a hit with especially Rob, Tony and Andrew leaving, but I think the high quality support we received from them on the forum is quite unique and it's...

Does Skyetel offer some kind of two factor authentication when logging into the online portal?

There is a bug on Yealink V83 firmware that breaks OpenVPN. What is the best way to report this to Yealink? I am running Yealink T23G and T42S phones connecting to my server via OpenVPN. V83 has introduced an issue. When on a call I have brief 2 seconds audio dropouts every 48 minutes. This...

Do you think the acquisition was a somewhat desperate move to rescue Digium? After all they provide a core component of Freepbx and Sangoma couldn't watch Digium going bankrupt.

Digium was losing 4 million last year. I guess Sangoma came in for the rescue, didn't want Asterisk to die.

Another advantage of pjsip is that you can simultaneously register several trunks out on different WAN interfaces with different external IP addresses by using different pjsip transports. Chansip only knows about one external IP address. Chansip freezing on unsuccessful DNS lookups had always...

But only for provisioning, not for calls, right? Maybe I am just paranoid, but I wouldn't feel terribly comfortable leaving port 5090 open to the Internet without whitelisted IP addresses either, cause even though it's a proprietary protocol and that port is far less exploited than 5060, who...

Can you elaborate why you think this is a drawback?

Are you doing the tunneling thing via port 5090? I don't feel comfortable with having any port open to the internet without whitelisting IP addresses, which is of course impossible with roaming cell phones and changing IP addresses. No wonder you are getting failed login attempts. I wouldn't...

So there is a firewall built into 3CX? Is there any documentation as to how it works?

I am specifically interested in the security aspects of connecting remote clients. Just making sure I understand how things are set up. The remote client 3CX app connects to the 3CX PBX which is behind a NAT firewall, via the 3CX tunnel. This means that SIP signalling and RTP media are sent...

I don't know if it's turned off. At least they aren't selling it anymore and have dropped support for it.

VMobile is dead. It never worked well anyway and Vitelity advised me not to buy it in the first place.

The 3CX app for android and apple looks great, but I am wondering about how you guys generally view the whole setup of remote mobile clients from a security perspective. 3CX box running behind a Sonicwall. I just looked at the various ports I have to open on my firewall to make this work. This...