BAD SIP headers. wont work

This app does not work well. At best it is marginal. There are two problems I have identified. One -- the more significant problem is that the sip headers seem to be incorrect when a proxy is used. The sip header when placing a call incorrectly uses the proxy address instead of the server address. So, calls cannot be made from the app (connected to Asterisk PBX running behind a NAT). Other apps do work properly (SIPPhone, WeePhone). Second problem is that when you connect (incoming calls work), delay in one direction is excessive. Also, there is NO information about the app available at their web site and no way to call except to dial a Canadian number. I would recommend AGAINST purchasing this app until these problems are fixed and instructions and support is available via the web.

budw2099 about Media5-fone Pro VoIP SIP Phone