interface cable standard for LAN and WAN

A LAN interface Cable Standard





1, 10base-t: twisted-pair cable, the general use of RJ-45 connectors, the maximum effective transmission distance is from the hub 100m, even the high-quality 5-type twisted pair can only reach 150m. Its matching resistance is 120 euro.





2, 10BASE5: Coarse coaxial cable, the use of plug-in joints, baseband signal, the maximum support length of 500m, the maximum number of segments is 100. Its matching resistance is 75 euro.





3, 10Base2: Fine coaxial cable, the connector using industrial standard BNC connector to form a T-socket; only 200 meters in use, only 30 computers per paragraph, the maximum number of segments is 30. Its matching resistance is 50 euro.





4, 100base-tx: Use more than 5 types of twisted pair, the length of the network segment can be 100m.





5, 100base-fx: The use of a pair of multimode or single-mode fiber, the use of multimode fiber, the computer to the hub between the maximum distance to 2km, the use of single-mode fiber when the maximum can reach 10km.





6, 1000base-t: Use more than 5 types of twisted pair, the length of the network segment can be 100m.





7, 1000base-f: The use of a pair of multimode or single-mode fiber, the use of multimode fiber, the computer to the hub between the maximum distance to the 300-550m (500m), the use of single-mode fiber when the maximum can reach 3km.





1000BASE-LX can connect single, multimode fiber; 1000base-sx can only connect multimode fiber. (3008)





1000base-lx 5 km
with single mode fiber




1000BASE-LX with multimode fiber (50um) 550m





1000BASE-LX with multimode fiber (62.5um) 550m





1000base-sx with multimode fiber (50um) 275m





1000BASE-SX with multimode fiber (62.5um) to transmit 550m





100BASE-FX Single Mode optical fiber transmission 10-20 km





100base-fx multimode module with multimode fiber transmission 2 km





two. Wide area network interface cable Standard





1, e1:64k-2mbps.





2, X25: The maximum rate is 64kbps.





3, Frame Relay: Using E1 circuit, the rate can be from 64k to 2Mbps.





4, V24: The router end is the DB50 connector, the external network end is 25 pin connector.





asynchronous mode of operation, the Package Link layer protocol PPP, Support Network layer protocol IP and IPX, the highest transmission rate is 115200bps;





synchronization allows you to encapsulate link layer protocols such as X.25, Frame Relay, PPP, HDLC, SLIP, and LAPB, and support IP and IPX with a maximum transmission rate of 64000bps.





Transmission distance: related to transmission rate, 2400bps-60m; 4800bps-60m; 9600bps-30m; 19200bps-30m; 38400bps-20m; 64000bps-20m; 115200bps-10m; (Triple Tutorial)





5, V35: The router end is the DB50 connector, the external network end is 34 pin connector.





V35 cable is generally only used for synchronous transmission of data, can be in the interface encapsulation X.25, Frame Relay, PPP, SLIP, LAPB and other link layer protocol, Support Network layer protocol IP and IPX.




The
v.35 cable transmission (under synchronous mode) is recognized as the highest rate of 2048000bps (2Mbps).





Transmission distance: related to the transmission rate, 2400bps-1250m;4800bps-625m;9600bps-312m 19200bps-156m;38400bps-78m;56000bps-60m;64000bps-50m ; 2048000bps-30m.





6, the following is a description of several common but important control signals in v.24 and v.35 procedures:





DTR (Data Terminal ready, terminal Ready)





DSR (Data set Ready, ready)





is primarily used to negotiate information between transmission devices.





DCD (Data Carrier detect)





is used for the device to detect the current link state.





RTS (Request to send requests to send)





CTS (Clear to send purge sent)





7, BRI: Use RJ-45 crystal Head connector. Interface procedures for customized bandwidth of 2b+d, a total of 128Kbps.





8, CE1: Can use the time slot range of 1~31, slot 0 for system synchronization, can not be used for data transmission. Each logical interface feature is the same as the synchronous serial port, which supports the link layer protocol of PPP, Frame Relay, LAPB and X.25, and supports network layer protocols such as IP and IPX.




The
router Ce1/pri interface is a DB-15 (PIN) connector, which is either a BNC head or a RJ-45 Crystal Head connector at the network end.





now, generally use the 75 European copper shaft cable to the 120 euro shielded twisted pair of conversion adapters to connect the use of the RJ-45 connector Ce1/pri cable.





9, PRI: can use 32 time slot 30, the other 0 o'clock gap for system synchronization, 15 o'clock Gap as D channel transmission signaling, can not be used casually.




The total bandwidth provided by the
PRI interface is 30b+d, a total of 2048Kbps.