Hi Max, I think that the answer is generally no - for example, I'm trivially easily able to place a call to my GSM phone with any CLI that I choose. If you can work around that, then consider the case where I divert my GSM phone to you - the call to you will come from the GSM network, but I can still set an arbitrary CLI.
Cheers -- Dave > Guys, > > This question might be a bit off-topic, so please bear with me as i > could hardly find a better place to solicit some help. > I suspect caller authentication can be challenging in the broader > context of VoIP/SIP. Now, if we restrict the set of calls to those > coming from the GSM network, is there a way to tell if the Caller Id > is coming from the right source? It doesn't need to be a > bulletproofed solution. For instance, if i can already say that a > given call is certainly coming from a GSM network (and that the call > metadata weren't tampered with), i could maybe rely on the GSM > authentication mechanism. > > Any idea? > Max. > > _______________________________________________ > FreeSWITCH-users mailing list > FreeSWITCH-users@lists.freeswitch.org > http://lists.freeswitch.org/mailman/listinfo/freeswitch-users > UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users > http://www.freeswitch.org -- David Knell, Director, 3C Limited T: +44 20 3298 2000 E: d...@3c.co.uk W: http://www.3c.co.uk _______________________________________________ FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users http://www.freeswitch.org
