We use Mikrotik 450G RouterOS 5.20 for our WAN and we have a Problem with our VoIP Phones (Siemens Optipoint 410).
If Connection Tracking is enable we have a Problem. If I call two participants within 10 Seconds the voice packets are blocked by the Routerboard (I made a Wireshark Trace) in this Time. IT doesn’t matter if a Cell Phone or another VoIP Phone behind the Router.
I can put this Time to 1 Second with “ip firewall connection tracking set tcp-time-wait-timeout=1s” but I don’t know what effects this setting had. I’m afraid that we have some Problems with the Latency because we have just 2Mbit Connections or something similar.
Different from other electronics, cell phones have become the necessity of every one’s daily life. If someone still has no idea of mobile phones, you must say that “Out!” of course except the senior citizens. To be honest, cell phones really bring us lots of benefits. We use it for talking, sending and playing. With it, our life can be modern one, without it, we will be live in the Mars, you know, know nothing about each other. But do cell phones have no disadvantages? Of course not, more and more people are using cell phones at the cost of other interests. Noises are everywhere, especially the one of mobile phones. What should we do, throw them away? It is a stupid behavior. Have you ever heard cell phone signal booster? It is a new kind of device to solve this problem, effective in blocking the signals of your cell phone and its nearby base station. one side, the mobile phone really benefits us a lot, but another side we also benefit from its noises for a long time, so the fight between the cell phone and cell phone jammer has been a hot topic in society now. Which side you stand by, jamming or not, it depends on you.