# i2V Support training

- ## General
- Display connection methods HDMI, DP, VGI, thunderbolt
- RS-232 (serial port)
- COM (Communication port - most drivers that simulate a serial port will create a device with "COM" in its name. )

- ## Networking
- what is LAN, WAN, VLAN, VPN, MPLS
- Ethernet, wifi, of long distance wireless
- subnet, gateway, switch, managed switch, L2 switch, L3 switch, POE. connection speed (1 GegaPort)
- Dhcp, DNS, DDNS
- IPV4, IPV6, how to set ip.
- ipconfig, telnet, ping, tracert
- cat5, cat6 cable, RJ45
- what is bandwidth (Mbps, Gbps .etc.)

- ## Camera
- General camera
- how camera takes picture
- camera sensors (CCD and CMOS)
- IP camera and analog camera
- Types of camera by form factor and functionality
- bullet, dome, ptz.
- zoom (digital and analog)
- camera parameters
- aperture
- shutter speed
- fps
- bitrate
- brightness
- contrast
- resolutions 4k, VGA, Full HD, HD, D1, CIF
- lens types (varifocal, fixed)
- lux
- wdr
- How camera works
- Encoders (H.264, H.265, mjpeg)
- what is encoding, why do we need it ?
- Transport protocols (rtsp, rtp, http)
- what are protocols, why are they needed ?
- Explain decoders and muxers (mp4, asf, mkv)
- H.264
- I-Frame
- PTZ
- Preset
- Tour
- IP camera casing ratings
- IP66, IP65 .etc

- links
- <u>[what does ip65 ip66 ip67 ip rating men](http://www.techguydubai.com/cctv/cctv-cameras-what-does-ip65-ip66-ip67-ip-rating-mean/)</u>
- <u>[varifocal vs fixed lens](https://www.security-camera-warehouse.com/knowledge-base/varifocal-vs-fixed-lens/)</u>

- ## Storage
- DAS (Directly attached storage)
- Type of storage ( HDD, SSD )
- How is storage attached ( IDE, SATA, SCSI, PCIe, M.2 )
- NAS
- is a shared file server, its offers file shares on network (is a unit/box with its own os)
- user standard IP network
- uses standard file transfer protocols
- NFS
- NCP
- SMB (server message block)
- CIFS (Common Internet File System)
- AFP (Apple File Protocol)

- SAN
- network of boxes to store data (cluster of storage device) available a single unit
- If any one box fails the data is still available depending on replication stategy and redundancy
- folder on SAN can be mapped/mount as local drive on a server
- #### The storage network can be
1. Fiber channel network
- Uses network of fibre channel connectivity devices: FC switches and Directors
- For transport, and FC SAN user **FCP**
- FCP is serial SCSI-3 over fiber channel
- Fibre channel can run over twisted pair copper wire
2. Or an IP network
- uses standard LAN infastructure: Ethernet switches
- For transport, an IP SAN uses iSCSI
- iSCSI is serial SCSI-3 over IP
- There are other ways to implement SAN by TCP/IP
- FCIP (fiber channel over IP)
- iFCP (Internet fibre channel protocol)
- RAID
- How to calculate storage for recording
- Links
- <u>[NAS and SAN intro](https://www.youtube.com/watch?v=csdJFazj3h0)</u>

- ## Server
- processors
- what are cores
- GPU
- Virtaulization

- ## Video Surveillance terms

- ## i2V VMS TroubleShooting
- camera disoconnected
- camera not searched
- camera not adding in i2v vms
- unable to see stream of camera in liveview (seeing trying to connect)
- camera video quality not good in i2v
- video jerk
- artifacts shown in video

- MS or RS service not starting
- Unable to view more cameras in liveview (related to recording and liveview stream)
- PTZ not working
- NAS drive not adding
- Recording switched to I-Frame issue