Author: Elsie Publish Time: 24-07-2019 Origin: Site
There are two ways to make a network line, one is crossing line, the other is parallel line.
The practice of crossing lines is as follows:
One adopts 568A standard and the other adopts 568B standard.
Parallel lines are:
Both ends are 568A standard or 568B standard. (Generally, 568B parallel line is used.)
If the two sides of the connection are not equal, parallel lines, such as computers, are used to connect to routers or switches.
If the two connected devices are equal, cross-wires, such as computers, are used to connect to the computer.
What is the case with the front line and what is the case with the back line?
PC-PC:------------ Reverse Line (Commonly Used)
PC-HUB:----------- Positive Line (Commonly Used)
PC-SWITCH:--------- Positive Line (Commonly Used)
PC-ROUTER:--------- Positive Line (Commonly Used)
HUB-HUB Ordinary Population: ----- Reverse Line
HUB-HUB Cascade Port-Cascade Port: --Reverse
HUB-HUB Ordinary Port-Cascade Port: --Positive Line
HUB-SWITCH:-------- Reverse Line
HUB (Cascade Port) - SWITCH:-- Positive Line
SWITCH-SWITCH:----- Reverse Line
SWITCH-ROUTER:------ Positive Line (Commonly Used)
ROUTER-ROUTER:------Reverse Line
HANGZHOU ZION COMMUNICATION CO.,LTD's crystal reference FCC 68 the first series of products designed in line with TIA-968A.'s Standard specifications for 24 ~ 28 AWG multi-core line and single-core line.
●Electrical Test:
A. Dielectric Withstanding Voltage test 1000V/DC
B. Insulation Resistance: >500MΩ.
C. Contact Resistance:<20mΩ
●Gold Plate Inspection:
Per MIL-G-45204C
TYPE II (99% pure gold minimum)
Grade C+(KNOOP HARDNESS RANGE 130~250)
●The Gold-plated Testing Instruments:
FISCHER. SCOPE X-RAY
●Mechanical:
A.Cable-to-plug tensile strength-20LBs(89N) min.
B.Durability:1200 mating cycles.
●Material & Finish:
A.Housing Material:Polycarbonate(PC.)(UL No. E50075)
Product Manager : Elsie
Email: elsie@zion-communication.com