Our office has 20 work stations with individual skype accounts with unlimited country subscription to US and Canada. We notice that about halfway through our work shift, calls would become chappy, simultaneous dropped calls on several stations, called party would have hard time hearing us and sometimes message with "your mic is really quiet" would pop-up. But if we switch to a different IP, then everything works fine again(Our internet service provider has assigned us 16 IP addresses). Then the cycle continues and we have to keep on switching our IP address when we would notice a decline on the call quality. We thought it was the internet problem but our other SIP accounts seem to work fine.
Does Skype server block IP's with heavy traffic to their network? Doesn't it determine how many accounts are logged on to that network?
Hope you can help. I can give the individual accounts that are running on our network. Would appreciate any reply from Tech Dept.
Thanks.
Hi.
My guess is that your ISP has setup so you have 16 IP addresses, but I doubt these are 16 IP addresses that are EXTERNAL..that is totally open to the internet.
To find out if they are, go to www.whatismyip.com and then go to your
START-menu and select RUN. Then type in CMD press ENTER.
In the black window type IPCONFIG and check if any of the IP-addresses you get up match the one on www.whatismyip.com
If you are several Skype users calling from the same location, and your network is protected by a gateway, then usually it would be the IP-address of your GATEWAY that might be visible at www.whatismyip.com
Problem here is, if your NAT (network address translation) is not setup well, or skype is not fond of NAT (I dunno this though), then for any users outside your network, the NAT service in the network would not be able to route the signals to the correct recipients. Resulting in dropped calls, and often this would affect several users at the same time.
It's not good, security wise, but one solution could be to check with the ISP if they can make sure that those 16 IP addresses are "real" addresses valid on the internet. This would make it so each of the connections to the internet would be separate and even pingable from the outside.
But as I said, this would open for 16 possible IP addresses and connection points that could be hacked into from the outside, especially if they are not protected with a firewall.
It should be possible to exclude these 16 addresses to be "open" to the outside, but then you would need 16 static addresses setup in the gateway/firewall. Setting a firewall to specifically monitor 16 connection points is no strain on it whatsovever.
My guess here is that for the outside world, your IP addresses for skype is the same for 16 users, causing miss-routed signals.
Toffy