Hello Dear Mikrotik Gurus!
I got some problem which is not understandable by me, need some advices where to look more. I have some VoIP equipment in my network and now one strange problem follows me:
during the SIP conversation between voip servers and cisco gateway not all packet sent from cisco successfully arrived to asterisk. Specifically Cisco sends “OK” answer when Asterisk asks to switch to T.38 for receiving the fax. I’m not sure, but probably this problem begins with 5th version.
IP Filters configuration should allow all traffic between cisco and asterisk and I can’t really catch the problem, does someone saw any problems like this one?