Getting calls with caller ID "sip" and "asterisk"
Getting calls with caller ID "sip" and "asterisk"
I got my freephoneline number a couple months ago and purchased the config file, registered it on my Grandstream HT502, works perfectly, except a few weeks into using the phone number, I started to getting calls with caller ID show as "sip" and "asterisk" at all hours of the day, and usually happens a few times in a roll. If I pick it up, I can't hear anything and the other end hang up after 1 or 2 seconds. It doesn't get forwarded or go into voice mail like all my other regular calls do. It's getting really annoying when it rings non-stop 2 o'clock in the morning. How I can I stop or filter out these calls?