Abstract: An apparatus and control method for controlling an online meeting is provided for receiving, from a camera, a captured video of the meeting room, transmitting, via a first server, the captured video of the meeting room to an online meeting client, specifying an ROI (Region Of Interest) in the meeting room, controlling an optical zoom magnification of the camera for capturing a still image of the ROI in the meeting room, and transmitting, via a second server that is different from the first server processing the captured video of the meeting room, the still image that the camera captures after the control for the optical zoom magnification to the online meeting client.

Abstract: A collapsible escape ladder is provided with a hook, two supporting straps, and a plurality of rungs which are connected in series by the two supporting straps passing through a first hole penetrating each rung. A standoff member is inserted through a second through hole in each rung which is communicated with the first through hole, and passes through an opening of each supporting strap which is aligned with the second through hole inside each rung, and a screw bole is screwed into the corresponding screw hole, thereby to fasten the plurality of rungs and the two supporting straps together.