Grandstream 42XX Series Making Ghost Calls
I have 16 total Grandstream gateways in our environment. Many of the ports on these gateways initiate outbound "ghost" calls dialing +11, +12, +122, and so many other combinations but never a complete number. My company manages retirement communities and we manage about 25% of our resident phones through the Grandstream gateways. I opened a ticket with Grandstream, but they keep giving me solutions to INBOUND "ghost" calls, which I do not have an issue. Has anyone seen this in their environment?
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