${CONNECTED_LINE_SEND_CALLEE_MACRO} Macro to call before sending a connected line update to the callee ${CONNECTED_LINE_SEND_CALLEE_MACRO_ARGS} Arguments to pass to ${CONNECTED_LINE_SEND_CALLEE_MACRO} ${CONNECTED_LINE_SEND_CALLER_MACRO} Macro to call before sending a connected line update to the caller ${CONNECTED_LINE_SEND_CALLER_MACRO_ARGS} Arguments to pass to ${CONNECTED_LINE_SEND_CALLER_MACRO}