X.31 protocol at the internal S0 port (X. 25 in the D channel) e.g. for electronic cash terminals on the internal S0 port
X.31 at int. S0 port
X.31 protocol at the internal S0 port (X. 25 in the D channel) e.g. for electronic cash terminals on the internal S0 port
Auerswald 95500
Auerswald 95500