Seems like you're simply going to have to pay for bandwidth so your users can call people outside the local network. Whichever ISP you use is going have to be c

Seems like you're simply going to have to pay for bandwidth so your users can call people outside the local network. Whichever ISP you use is going have to be comfortable with what you're doing or not care and be comfortable with the amount of bandwidth you're using. It's a limitation they don't really harp on, but it makes sense.