Lesson 1Cabling and topology choices: twisted-pair (CAT5e/6) for IP systems, 2-wire bus cable options for legacy systems, coax considerations, shielding and pair assignmentThis lesson looks at wiring and layout choices, matching CAT5e/6 for internet systems, 2-wire for old digital, reusing coax, shielding, pair uses, earthing, and star vs bus in small blocks.
CAT5e and CAT6 selection and limits2-wire bus cable types and constraintsReusing existing coax in retrofitsShielding, grounding, and noise controlStar vs bus topology in three-story sitesLesson 2Apartment monitor placement and types: flush vs. surface, color video, audio handset vs. hands-free, distributed topology (star or bus)This lesson picks and places flat screens, flush or wall mount, handset or free hands, screen size, power/data wires, paths, and star/bus from risers to flats.
Flush vs surface mounting requirementsHands-free vs handset user experienceScreen size, buttons, and UI layoutCable routing from riser to monitorsStar and bus distribution in apartmentsLesson 3Entrance panel placement and selection: camera specs (resolution, WDR, IR), vandal resistance, mounting height and sightlinesThis lesson chooses and sets gate panels, camera clearness, wide light handle, night light, anti-vandal, height, views, weather guard, and reach for three-storey gate.
Selecting suitable camera resolution and lensUsing WDR and IR for difficult lightingVandal-resistant housings and ratingsMounting height, angles, and sightlinesWeatherproofing and accessibility needsLesson 4Intercom system types: IP-based vs. 2-wire bus systems (digital), pros/cons for a small three-story residential buildingThis lesson matches internet and 2-wire digital door talk for small three-storey, wiring, growth, video quality, power, trust, cost, fit time, future changes.
IP video intercom architecture overview2-wire digital bus system architectureCost and scalability comparisonReliability and maintenance factorsRetrofit vs new-build selection criteriaLesson 5Integration notes with structured cabling: VLANs, network segmentation, bandwidth considerations, multicast/uni-cast video streams, and QoS configuration basicsThis lesson joins internet door talk with structured wires, VLAN plans, security splits, bandwidth/PoE, group vs single video, basic speed settings for voice/video.
Assigning VLANs for voice, video, and dataSegmentation between intercom and tenant LANsBandwidth and PoE switch sizingMulticast vs unicast video configurationQoS markings and switch queue settingsLesson 6Door release integration: electric strike vs. magnetic lock wiring and power requirements, relay wiring from intercom to lock, safety considerations (egress)This lesson links door gear with talk system, electric vs magnet locks, relay wires, power size, safe fail vs lock fail, exit safety, fire links, rule-follow open ways.
Electric strike vs magnetic lock selectionLock voltage, current, and power sizingRelay contact types and wiring diagramsFail-safe, fail-secure, and egress safetyFire alarm and emergency release inputsLesson 7Testing video and audio: test checklist for camera image, microphone/speaker levels, intercom signaling, latency and network QoS for IP intercomsThis lesson gives test list for video/audio, frame, focus, light handle, night checks, mic/speaker sound, call signs, delay, lost packets, speed check on internet talk nets.
Video image quality and framing checksMicrophone gain and speaker volume testsCall signaling and door release testsNetwork latency, jitter, and packet lossDocumenting results and client handoverLesson 8Powering strategies: PoE for IP intercoms vs. centralized power supply for 2-wire systems, UPS/backup for entrance panel and door releaseThis lesson plans power, PoE for internet talk vs central for 2-wire, load math, supply picks, UPS spots, backup for gates, switches, locks.
PoE switch selection and power budgetCentralized low-voltage power suppliesLoad calculation for locks and panelsUPS sizing and runtime estimationPower distribution and overcurrent protection