A Free SIP Out Bound Proxy Service
There is nothing worse than your provider blocking outbound SIP traffic (UDP 5060). There is a great service out now that will allow you to bypass your providers hatred for SIP.
Last I checked ClearWire blocks SIP. I am assuming this should work for ClearWire users. If it works please leave a comment and let me know.
A complete list of proxies is available at http://freesps.googlepages.com/
Last I checked the following proxies and ports were avaialable:
free.sipout.com:53
free.sipout.com:69
free.sipout.com:80
free.sipout.com:123
free.sipout.com:135
free.sipout.com:161
free.sipout.com:443
free.sipout.com:1433
free.sipout.com:1812
free.sipout.com:3389
free.sipout.com:5900
free.sipout.com:15345
free.sipout.com:27888
free.sipout.com:44899
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