连接器分类及选型（常用连接器分类有哪些）

RJA1X

225A adapter

Connector for a modular plug to a four-prong jack

RJA2X

267A adapter

Connector for splitting one modular jack to two modular jacks

RJA3X

224A adapter

Connector for adapting a modular plug to a 12-prong jack

RJ2MB

50-pin

2–12 telephone lines with make-busy arrangement

RJ11(C/W)

6P2C

Establishes a bridged connection for one telephone line (6P4C if power on second pair)

RJ12(C/W)

6P6C

Establishes a bridged connection for one telephone line with key telephone system control ahead of line circuit

RJ13(C/W)

6P4C

Similar to RJ12, but behind the line circuit

RJ14(C/W)

6P4C

For two telephone lines (6P6C if power on third pair)

RJ15C

3-pin weatherproof

For one telephone line for boats in marinas

RJ18(C/W)

6P6C

For one telephone line with make-busy arrangement

RJ21X

50-pin

Multiple (up to 25) line bridged T/R configuration

RJ25(C/W)

6P6C

For three telephone lines

RJ26X

50-pin

For multiple data lines, universal

RJ27X

50-pin

For multiple data lines, programmed

RJ31X

8P8C

Allows an alarm system to seize the telephone line to make an outgoing call during an alarm. Jack is placed closer to the network interface than all other equipment. Only 4 conductors are used.

RJ32X

8P8C

Like RJ31X, this wiring provides a series tip and ring connection through the connecting block, but is used when the customer premises equipment is connected in series with a single station, such as an automatic dialer.

RJ33X

8P8C

This wiring provides a series tip and ring connection of a KTS line ahead of the line circuit because the registered equipment requires CO/PBX ringing and a bridged connection of the A and A1 lead from behind the line circuit. Tip and ring are the only leads opened when the CPE plug is inserted. Typical usage is for customer-provided automatic dialers and call restrictors.

RJ34X

8P8C

Similar to RJ33X, but all leads are connected behind the line circuit.

RJ35X

8P8C

This arrangement provides a series tip and ring connection to whatever line has been selected in a key telephone set plus a bridged A and A1 lead.

RJ38X

8P4C

Similar to RJ31X, with a continuity circuit. If the plug is disconnected from the jack, shorting bars allow the phone circuit to continue to the site phones. Only 4 conductors are used.

RJ41S

8P8C, keyed

For one data line, universal (fixed loop loss and programmed)

RJ45S

8P8C, keyed

For one data line, with programming resistor

RJ48C

8P4C

For four-wire data line (DSX-1)

RJ48S

8P4C, keyed

For four-wire data line (DDS)

RJ48X

8P4C with shorting bar

For four-wire data line (DS1)

RJ49C

8P8C

For ISDN BRI via NT1

RJ61X

8P8C

For four telephone lines

RJ71C

50-pin

12 line series connection using 50-pin connector (with bridging adapter) ahead of customer equipment. Mostly used for call sequencer equipment.