Dear All, When I executed the "make mod_opal" in the source directory, it throws the following error, making all mod_opal Compiling /usr/src/GIT/freeswitch/src/mod/endpoints/mod_opal/mod_opal.cpp... Compiling /usr/src/GIT/freeswitch/src/mod/endpoints/mod_opal/mod_opal.cpp ... /usr/src/GIT/freeswitch/src/mod/endpoints/mod_opal/mod_opal.cpp:516:146: error: macro "switch_core_session_request" requires 4 arguments, but only 3 given /usr/src/GIT/freeswitch/src/mod/endpoints/mod_opal/mod_opal.cpp: In member function ‘virtual OpalLocalConnection* FSEndPoint::CreateConnection(OpalCall&, void*, unsigned int, OpalConnection::StringOptions*)’: /usr/src/GIT/freeswitch/src/mod/endpoints/mod_opal/mod_opal.cpp:515: error: ‘switch_core_session_request’ was not declared in this scope make[4]: *** [mod_opal.lo] Error 1 make[3]: *** [all] Error 1 make[2]: *** [mod_opal-all] Error 1 make[1]: *** [mod_opal] Error 2 make: *** [mod_opal] Error 2 Kindly anyone give some solution for this.. Regards, Velusamy.