Topology: PSTN E1 -> Asterisk_1 -> IAX TRUNK VIA INTERNET -> ASTERISK_2 -> H323 Gatekeeper/gateway There will probably be a few boxes connecting to Asterisk_2 in this fashion for redundancy. This will only be for termination through the E1, not origination. ---extensions.conf --- [general] writeprotect=no [globals] CONSOLE=Console/dsp [default] exten => _XXXXXXXXXXXXXX,1,Dial(IAX2/IAX_GATE) ---iax.conf--- [general] bandwidth=low trunkfreq=20 [iax_gate] type=peer host=192.168.3.200 context=* qualify=yes trunk=yes