Hello John; And for GSM calls, u were using sip trunk from asterisk to these gateways? And how you were sending sms?> I use VoIP Innovations and ThinQ (formally SIPRoutes) and they both support SMS. That way it’s very easy to write it into the dial plan.RegardsBilal -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.digium.com/pipermail/asterisk-users/attachments/20190426/8f82242b/attachment.html>