On 07/03/2010 09:22 AM, mosbah abdelkader wrote: > The signaling part of ISUP can be carried over M3UA (MTP3 over IP). What > about the media part (voice). Is it transported over RTP. No... if you were going to carry both signaling and media over IP, there wouldn't be much reason to use SS7 at all, since there are many other options for pure-IP connectivity (SIP, H.323, H.248, etc). -- Kevin P. Fleming Digium, Inc. | Director of Software Technologies 445 Jan Davis Drive NW - Huntsville, AL 35806 - USA skype: kpfleming | jabber: kfleming at digium.com Check us out at www.digium.com & www.asterisk.org