We have Cudatel 270 system in our office. We use Yealink T38G phones. Recently, when we first dial a phone number to call out, when its sent, it comes up with "not found" on the phone screen. We dial it again and the call goes through. It does this sometimes as well when dialing an extension. I have tried rebooting the telephone server, main server here at the office as well as all the switches.
Any ideas? My subscription was up in October and I did not renew.
Thanks in advance!