[Asterisk-Users] G.729 vs. G.729 pass thru

[Anthony Law]

Sorry for my ignorance but what is the difference between using the G.729
codec and using G.729 pass thru. In my scenario below does it consider to be
using the G.729 or using it as pass through?? Do I still need licence for
the G.729?


SIP(if using g.729) --->asterisk----->h323
softswitch(g729)----->cisco5300(g729)---->pstn
Phone                         SIP/H323
                                   translation

Where could I find more information for using asterisk as pass thru?


Regards,



Anthony