For any concerned Voxalot users "missing" their US toll-free numbers:
1) It still appears to work without the asterisk. 18005558355 gets the very wonderful TELL Me service. Testing 18005558355 in the Voxalot Dialplan window reveals that toll-free numbers are directed to a number of public SIP gateways.
2) It is possible to add one of these (
Toll Free Gateway) as a provider in Voxalot (use guest as user and as password proxy=sip.tollfreegateway.com)
Tried and tested
Regards to All
Edit Don't forget to edit your dialplan to send all 18 calls to tollfreegateway