Openr2 is a library that implements the mfc/r2 telephony signalling over e1 lines using the dahdi telephony interface.

the mfc/r2 protocol is a telephony signalling protocol, widely used in latin america, china and africa, similar to the isdn protocols found in most of europe and north america

this package contains a shared library implementing the protocol.

you may want to have a look at the asterisk pbx for a telephony application that uses this library.