A LAN interface cable standard
1, 10 base-t: twisted-pair cable, generally use the RJ - 45 connector; Maximum effective transmission distance is 100 m away from hub, even the high quality of the five types of twisted pair also can reach 150 m. Their resistance matching for euro 120.
2, 10 base5: thick coaxial cable, use plug-in tap; The baseband signal; Most biggest support is 500 m long, 100. Their resistance matching for euro 75.
3, 10 base2: fine coaxial cable, connector USES the industry standard of BNC connector T socket; Using range is only 200 meters, each 30 computers, can only be used inside a period of up to 30. Their resistance matching for 50 euro.
4, 100 base - TX: use more than 5 class twisted-pair network segment length up to 100 m.
5, 100 base - FX: use a pair of multimode or single-mode fiber, using a multimode fiber, the distance between the computer to the hub maximum to 2 km, up to 10 km when using single mode fiber.
6, 1000 base-t: use more than 5 class twisted-pair network segment length up to 100 m.
7, 1000 base - F: use a pair of multimode or single-mode fiber, using a multimode fiber, the distance between the computer to the hub maximum to 300-550 - m (500 m), up to 3 km when using single mode fiber.
Base - 1000 LX can order, multimode optical fiber; Base - 1000 SX can only meet multimode fiber. (3008).
Base - 1000 LX in single mode fiber 5 km
Base - 1000 LX with multimode fiber (50 um) 550 m
Base - 1000 LX with multimode fiber (62.5 um) 550 m
Base - 1000 SX with multimode fiber (50 um) 275 m
Base - 1000 SX with multimode fiber (62.5 um) 550 m
100 base - FX single mode module using single-mode fiber 10 to 20 kilometers
100 base - FX multimode module with multimode fiber 2 km
2. Wan interface cable standard
1, the E1:64 k - 2 MBPS.
2, X25: maximum rate of 64 KBPS.
3, Frame Relay: using E1 circuit, speed from 64 k to 2 MBPS.
4, V24: router for DB50 joint, an external network side is 25 pin connector.
Asynchronous work mode, encapsulate the PPP link layer protocols, support network layer protocols IP and IPX, transfer rate is highest 115200 BPS.
Synchronous mode, can encapsulate x. 25, frame relay, the PPP, in HDLC, SLIP and LAPB link layer protocol, support IP and IPX, and maximum transmission rate was only about 64000 BPS.
Transmission distance: related to the transmission rate, 2400 BPS - 60 m; 4800 BPS - 60 m; 9600 BPS - 30 m; 19200 BPS - 30 m; 38400 BPS - 20 m; 64000 BPS - 20 m; 115200 BPS to 10 m.
5, V35: router for DB50 joint, an external network side is 34 pin connector.
V35 cable used to synchronously transmit data only commonly, can the interface encapsulation x. 25, frame relay, the PPP, SLIP, LAPB link layer protocol, support the network layer protocol IP and IPX.
V. 35 cable transmission (synchronously) is recognized as the highest rate of 2048000 BPS (2 MBPS).
Transmission distance: related to the transmission rate, 2400 BPS - 1250 - m. 4800 BPS - 625 - m; 9600 BPS - 312 - m; 19200 BPS - 156 - m; 38400 BPS - 78 - m; 56000 BPS - 60 m; 64000 BPS - 50 m; 2048000 BPS - 30 m.
6, the following is a v. 24 and v. 35 discipline in a few common but important control signal:
DTR (Data terminal ready, Data terminal ready)
The DSR (Data Set Ready Data Ready)
Mainly used for consultation information between the transmission equipment.
DCD (Data Carrier Detect Data Carrier detection)
Used to test the current equipment state of the link.
The RTS (request to send the request to send)
CTS (the clear to send CTS)
7, BRI: use the RJ - 45 crystal head connector. The bandwidth of the custom interface procedures for 2 b + D, a total of 128 KBPS.
8, CE1: you can use the time slot in the range of 1 ~ 31, 2 0 for system synchronization, cannot be used for data transmission. Each logical interface characteristics are the same as the synchronous serial port, support for the PPP, frame relay, LAPB and x. 25 link layer protocols, such as support for IP and IPX network layer protocols.
Router CE1 / PRI interface end of DB - 15 (pin type) connector, on the network side are respectively BNC head or is RJ - 45 crystal head connector.
Now, generally USES euro 75 copper shaft cable to euro 120 is shielded twisted-pair cable adapter to connect to use RJ - 45 CE1 / PRI cable connector.
9, PRI: can you use the 30 in the 32 slot, another zero time slot used in system synchronization, 15 time slot used for D signaling channel transmission, cannot be used casually.
PRI interface can provide the total bandwidth of 30 b + D, a total of 2048 KBPS