Do you have a post somewhere detailing your setup? like what hardware/software you are using?
I'm a new customer to voip.ms for a couple months in Calgary. Have Telus Optik TV/Internet package. Cancelled my land line and ported the number to voip.ms. Couldn't seem to get the ported number working on the main account but managed to get it working via a sub-account. During the migration from Telus to voip.ms, got my Dlink-380 router replaced with an Actiontec one. I'm using a Grandstream HT-502 (2 port) behind the Actiontec as I don't have a static public ip. Using STUN server setup. Seems that every couple weeks I have to reboot my HT 502 unit by unplugging/plugging it back in. Not sure where my problem is but I figured your setup might point me in the right direction to make my setup more stable.
I've been testing voip.ms at work and it is working great. Have static ip's so thing are going a lot smoother with that implementation.
I'm planning in the near future to play with a software PBX. Currently tinkering with PBX in a Flash.