What is TP, TO, TD and TW?

TO stands for data, that is, network points. 2TO represents two network points and two network lines. The same is true below.

TD and TW stand for voice, that is, telephone points.

TP, TO, TD and TW in weak current mainly rely on legends, and each set of drawings has legends, usually on the first or second page. The engineering drawings are based on the legend of Shu in this set of drawings.

Extended data:

Common weak current systems include: closed-circuit television monitoring system, burglar alarm system, entrance guard system, electronic patrol system, parking lot management system, visual intercom system, home intelligence system and security system, background music system, LED display system, plasma splicing screen system, DLP large screen system and three-meter cc system.

Building automatic control system, lightning protection and grounding system, paging intercom and professional intercom system, weak current pipeline system, UPS uninterrupted power supply system, computer room system, integrated wiring system, computer local area network system, property management system, multifunctional conference room system, cable TV system, satellite TV system, satellite communication system, fire fighting system, telephone communication system, hotel management system, video-on-demand system, etc.