Calls being dropped

[positive3]

Hello.

I have 3CX still hosted by 3CX as it's still in it's first year.

I have a Linksys SPA3102 with a bell attached to the phone port.

I have a Yealink WP52P with 4 handsets attached to it.

There is a ring group 800 that all of the phones are in and the sip trunk points to it.

Most of the time everything is fine and all 5 lines ring. Every now and then the dect phones just cannot do anything. They don't ring, they cannot call but the bell still rings. If I reboot the base station then they all start working again. One user has the 3cx app on a mobile and that works all the time.

They are on a good connection and behind a draytek 2860. The phone system and the draytek all have the latest firmware as do the phones.

I have attached the log of when they go crazy.

Any helps greatly appreciated.

[attachment deleted by moderator]

 

[JohnS_3CX]

Ok then that seems like a an attacker spoofing the user agent. Leave it blocked and it will stop them.

As for the DECT phone, please try to upgrade the base's firmware and then the handset as per the guide I posted above (it has a Yealink firmware landing page linked specifically for 3CX), and reset/provision it behind the SBC rather than STUN

 

[positive3]

Ok then that seems like a an attacker spoofing the user agent. Leave it blocked and it will stop them.

As for the DECT phone, please try to upgrade the base's firmware and then the handset as per the guide I posted above (it has a Yealink firmware landing page linked specifically for 3CX), and reset/provision it behind the SBC rather than STUN

I have blocked it until 2039! I will probably put it all through the SBC later in the week.

 

[AWS2P]

Don't forget to delete mac adress on RPS before switching STUN to SBC mode