[Asterisk-Users] T.38 Faxing -> at astricon ?

[C F]

One cannot and should not compare ISDN/SS7 to VoIP in any way just
because it is digitalized voice. The fact that the transmission is
digital does not change the success of sending faxes. The reason that
VoIP is less reliable than ISDN/SS7 for faxes is becuase of the fact
that an IP network is a packet switched network, while the ISDN/SS7 is
a circuit swithced network. On an IP network there is no gurantee on
any given packet that it will arrive intact and in sequence at the
other end, while this all exists on ISDN/SS7.