How to configure sipml5 for outgoing calls via multiphone?

Question

SIP

Hello. I can't set up outgoing calls from sipml5.org/call.htm through a megaphone www.multifon.ru/
Incoming calls work, they are perfectly received through the browser. But outgoing - no. If you call a multiphone number, indicating the number in the format * 79хххххххх, then it rings, but simply to a cellular or home phone, it does not call.