macro stdexten( ext , dev ) {

        if ("${MACRO_CONTEXT}" = "ael-default") {
                // Call from internal user
                // Allow both caller and callee do transfer
                options = tT;
                Set(features=nway-invite-both);
        }
        else {
                options = t;
                Set(features=nway-invite-callee);
        };

        Set(DYNAMIC_FEATURES=${features});

        NoOp(${CALLERID(name)});
        NoOp(${CALLERID(num)});
        NoOp(${CALLERID(all)});

        Dial(${dev}/${ext},20,${options});

        switch(${DIALSTATUS}) {
        case BUSY:
                Voicemail(${ext}, b);
                break;
        default:
                Voicemail(${ext}, u);
        };
        catch a {
                VoiceMailMain(${ext});
                return;
        };
};