I'm not a telephone expert with our system, but know just enough to be mildly dangerous.
We have a NEC SV9100 VoIP system with SIP trunking through our ISP. We occasionally have someone call our number and try to enter an extension and they get an "Invalid Entry" message, and they keep doing...
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.