Unfortunately we're not able to pass the toll-free number as the outbound Caller ID.

Wholesale VoIP rates are very complex. Just one of our carriers as an example has over 1,000,000 rates for outbound calls. There are a lot of things that determine what rate applies including the to/from number combination, the phone companies on both ends, etc.

If they don't get a "valid" number they can match up with a rate, the call is automatically billed at the highest US rate in the entire ratesheet with all of our carriers. This is common with VoIP due, but not with landline/physical connections.

If we pass a toll-free number as the from number, it's considered invalid and not able to be rated with a rate, so it would go to highest. The main reason is that almost all the variables with rates depend on geography and since a toll-free number is not location-based, there is no location.

With a physical connection to the phone network, there IS a location even if a non-valid number is passed so it doesn't matter.

Convoluted I know...but this is the kind of stuff I spend 99 hours a day dealing with.