atcomsystems.ca/forum Forums TDM Business Telephone Systems Samsung Telephones & Systems Officeserv systems can't dial out.

JBean, just happened to another customer. She rebooted the system herself before calling but she did say cannot hear DTMF tones.

Also, the reboot returns changes the year back to 2021 from 2092.

I dug into my notes and found a recommendation that ports 161, 162 TCP should be blocked
to the IP of the phone system. Going to give that a try.