I have a customer with what seems to be great internet with great speeds. I just installed a new phone system for them about a month ago, and there is a huge problem. Random calls on random extensions completely drop around 4 times a day. These calls usually drop around 28sec to 1:30 into the call. I have been in contact with 3CX support but it seems nothing is being figured out. It is clearly not a SIPTRUNK issue or we'd experience it with other customers. I am thinking maybe it could be SIP ALG on the Comcast modem which is in bridge mode? Any ideas?
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