I’m trying to set up my account so outbound calls will go through a proxy:  free.sipout.com:161

I’ve set it up under OTHER in my iptel.org account so I access pbxes.com and put free.sipout.com:161 into a trunk and set it as an outbound route.   I then dial +001 area code and number but it doesn’t work.  What am I doing wrong?

Thanks,

Alan