Serial Port Interface Card Installation

This chapter tells how to connect and configure serial line network interface card.

Introduction to serial line connecting

DTE&DCE equipments

Interface card of serial port interface

Distance limitation of serial port connecting

V.28/V.35 sync/async interface cards

 V.28/V.35sync/async serial port cards&cables

Differentiated serial port card

Interface of differentiated serial port card&cable

 

Introduction to serial line connecting

    We  supply the following serial port cards:

1.  V.28/V.35 double sync/async serial port card WIC-2T

2.  V.28/V.35 single sync/async serial port card WIC-1T

3.  Double differentiated serial port card WIC-2T-V11

4.  Single differentiated serial port card WIC-1T-V11  

The serial port cards can be used on slot1/slot2 of 1750/2620 router,slot1 of 2621 router,slot1/slot3 of 2630 router and slot1/slot4 of 2650 router.Check the following cases before using the serial port card:

1.  The equipments connected is DTE or DCE.

2.  The connector is hole or pin joint.

3.  The signal standard of the interface chosed:V.28(EIA/TIA-232),V.35,V.36(EIA/TIA-449),X.21,EIA-530。

DTE&DCE equipment

    The equipment connected to the serial port card should be DTE or DCE. One DCE equipment supplies one clock signal to make the equipment and the router communicate at the same time , but the DTE equipment does not supply clock signal.DTEequipment always connects to DCE equipment.Please refer the file to confirm the the equipment is DTE or DCE. Please refer to the following table if you are not clear about the type of the equipment and the connector assembly :

 

type of the equipment

type of the connector assembly

typical equipment

DTE

pin

PC terminal

 

DCE

hole

Modem

CSU/DSU

Multiplexer

CSU/DSU =channel  service  unit / data  service  unit

 

Interface standard of the serial port card

    The physical protocol supported by the serial port includs:V.24/V.28(EIA/TIA-232),V.36(EIA/TIA-449),X.21,V.35,EIA-530. WIC-2T&WIC-1T only support V.24/V.28(EIA/TIA-232),V.35;WIC-2T-V11&WIC-1T-V11 only support V.36(EIA/TIA-449),X.21,EIA-530. The user can choose ralervent interface cable to connect the special equipment.

 

Distance restriction of serial line connecting

    The serial port has distance restriction of communication at any rate and the lower the rate ,the further the distance.All serial port signals have distance restriction and the signal is weaken even lost when the distance acesses the restriction.The following table shows the rate and distance restriction of the different interface:

     The rate and distance restriction of V.24/V.28(EIA/TIA-232) cable:

baud rate(bps)

max distance(meter)

2400

60

4800

30

9600

15

19200

15

38400

15

57600

8

64000

8

115200

8

 

    The cable rate and transfer distance of V.35 、V.36(EIA/TIA-449)、X.21、EIA-530:

baud rate(bps)

max distance(meter)

2400

1250

4800

625

9600

312

19200

156

38400

78

56000

31

64000

20

2M

12

 

V.28/V.35 sync/async serial port card

V.28/V.35 double sync/async serial port card WIC-2T:

V.28/V.35single sync/async serial port card WIC-1T:

V.28/V.35 sync/async  serial port can be used as DTE&DCE.The user can choose to use according to the need .The performance of . V.28/V.35 sync/async serial port card shows in the following table:

interface performance

description

sync

async

joint

60pin 4 high density connector assemblyDB60

60 pin 4high density connector assemblyDB60

cable

DB60 transfer V28 cable

DB60transfer V35cable

DB60 transfer V28cable

interface standard

V.24/V.28(EIA/TIA-232)

V.35

V.24/V.28(EIA/TIA-232)

max baud rate(bps)

64K

2M

115.2K

protocol supported

X.25、X.32、FR、HDLC、SLIP、PPP、SDLC

PPP、SLIP

 

The connecting picture of V.28/V.35 sync/async serial port card and the external equipment:

 

    The table of indicator of serial port card(TXD,RXD from the right to the left):

LED

description

TXD0

Indicate the serial port0 is sending

RXD0

Indicate the serial port0 is accepting

TXD1

Indicate the serial port1 is sending

RXD1

Indicate the serial port1 is accepting

 

V.28/V.35 Sync/async serial port card & cable

    V.28/V.35 sync/async uses 60-pinsocket and DB60 interface.One DB60 interface supports two sync/async serial ports(single serial port card uses the first group data).

The definition of serial port DB60 footnote is listed in the following table:

Number

 

name

Brief note

3

Second group carrier detect

J1CD

DTE DCEV28&V35

4

Second group data circuit devices ready

J1DSR

DTE DCEV28&V35

5

Second group permitted to transmit

J1CTS

DTE DCEV28&V35

6

Second group data receiving

J1RxD

DTE DCEV28

7

Second group interface transmit clock

J1TxC

DTE DCEV28

8

Second group interface receiving timer

J1RxC

DTE DCEV28

9

Second group internal timer output

CLK232-1

DTE DCEV28

10

Second group internal timer output

CLK232-1

DTE DCEV28

11

Second group data transmittance

J1TXD

DTE DCEV28

12

Second group request transmittance

J1RTS

DTE DCEV28&V35

13

Second group data terminal ready

J1DTR

DTE DCEV28&V35

15

Signal grounded

GND

DTE and DCE public signal grounded

17

First group sends data positive phase

TXD0+~

DTE DCEV35

18

First group sends data negative phase

TXD0-~

DTE DCEV35

19

First group internal timer outputs positive phase

ECLK0A+~

DTE DCEV35

20

First group internal timer outputs negative phase

ECLK0A-~

DTE DCEV35

21

First group internal timer outputs positive phase

ECLK0B+~

DTE DCEV35

22

irst group internal timer outputs negative phase

ECLK0B-~

DTE DCEV35

23

First group sends positive phase of timer

TXC0+

DTE DCEV35

24

First group sends negative phase of timer

TXC0-

DTE DCEV35

25

First group receives positive phase of timer

RXC0+

DTE DCEV35

26

First group receives negative phase of timer

RXC0-

DTE DCEV35

27

First group receive data positive phase

RXD0+

DTE DCEV35

28

First group receives data negative phase

RXD0-

DTE DCEV35

29

Second group internal timer outputs positive phase

ECLK1B+~

DTE DCEV35

30

Second group internal timer outputs negative phase

ECLK1B-~

DTE DCEV35

31

Second group internal timer outputs negative phase

ECLK1A-~

DTE DCEV35

32

Second group internal timer outputs positive phase

ECLK1A+~

DTE DCEV35

33

First group carrier detect

J0CD

DTE DCEV28&V35

34

First group data circuit devices ready

J0DSR

DTE DCEV28&V35

35

First group permitted to transmit

J0CTS

DTE DCEV28&V35

36

First group data receiving

J0RXD

DTE DCEV28

37

First group interface transmitting clock

J0TXC

DTE DCEV28

38

First group interface receiving clock

J0RXC

DTE DCEV28

39

First group internal clock output

CLK232-0

DTE DCEV28

40

First group internal clock output

CLK232-0

DTE DCEV28

41

First group data transmitted

J0TXD

DTE DCEV28

42

First group requests transmitting

J0RTS

DTE DCEV28&V35

43

First group data terminal ready

J0DTR

DTE DCEV28&V35

45

Signal grounded

GND

DTE and DCE public signal grounded

47

Second group sends data positive phase

TXD1+~

DTE DCEV35

48

Signal grounded

GND

DTE and DCE public signal grounded

49

First group interface mode selection

PORTMODE0

used to choose V28 or V35

50

Second group sends data negative phase

TXD1-~

DTE DCEV35

51

Signal grounded

GND

DTE and DCE public signal grounded

53

Second group transmits positive phase of clock

TXC1+

DTE DCEV35

54

Second group transmits negative phase of clock

TXC1-

DTE DCEV35

55

Second group receives positive phase of clock

RXC1+

DTE DCEV35

56

Second group receives negative  phase of clock

RXC1-

DTE DCEV35

57

Second group sends data positive phase

RXD1+

DTE DCEV35

58

Second group sends data negative phase

RXD1-

DTE DCEV35

60

Second group interface mode selection

PORTMODE1

used to choose V28 or V35

 

    The 2-in-1 cable used to connect DB60 sync/async serial port and the external equipment has three kinds: V.28 2-in-1 cable with the number RCLS101,V.35 2-in-1cable with the number RLS0111,V.35 2-in-1 V.28&V.35 cable with the number RCLS002.

   The picture of V.28 2-in-1 cable with the number RCLS101:

 

 

 

   The picture of V.35 2-in-1 cable with the number RLS111:

 

 

 

    The picture of V.35 2-in-1 V.28&V.35 cable with the number RCLS002:

 

 

The differentiated serial port card

The double differentiated serial port card WIC-2T-V11:

 

The single differentiated serial port card WIC-1T-V11:

The differentiated serial port can be used as DTE and DCE. The user can choose according to the need. the performance of the differentiated serial port card is as the following table:

 

port performance

description

joint

60pin 4 high density connector assembly DB60

cable

DB60 transfer X.21 cable

DB60 transfer V.36 cable

DB60 transfer EIA-530 cable

interface standard

support

X.21,V.36,EIA-530

max rate (bps)

2Mbps

 

 

The connecting picture of differentiated serial port card and external is as the following :

 

 

The indicator lamp of the differentiated serial port card shows in the following table (TXD,RXD from right to left ):

LED

description

TXD0

Indicte serial port0 is sending

RXD0

Indicate serial por0 is accepting

TXD1

Indicate serial port1 is sending

RXD1

Indicate serial por1 is accepting

 

The interface &cable of differentiated serial port card

The differentiated serial port card uses 60-pin socket and DB60 interface.One DB60 interface supports two differentiated serial ports (the single serial port card DB60 uses the first group data).

The definition of serial port DB60 footnote is listed in the following table:

number

name

name

note

1

Second group cable mode number

PORT1MODE0

Used to identify the connected cable type

2

Signal grounded

GND

DTE and DCE public signal grounded

3

Second group data circuit device is ready for positive phase

J1DSR+

DTE ← DCE

4

Second group of data receives positive phase

RxD1+

DTE ← DCE

5

Second group of carrier detects positive phase

J1CD+

DTE ← DCE

6

Second group permits to transmit positive phase

J1CTS+

DTE ← DCE

7

Second group of internal clock outputs positive phase

ECLK1B+

DTE → DCE

8

Second group of internal clock outputs positive phase

ECLK1A+

DTE → DCE

9

First group of internal clock outputs positive phase

ECLK0A+

DTE → DCE

10

First group of internal clock outputs positive phase

ECLK0B+

DTE → DCE

11

First group receives data positive phase

RXD0+

DTE ← DCE

12

First group of carrier detects positive phase

J0CD+

DTE DCE

13

First group permits to transmit positive phase

J0CTS+

DTE DCE

14

Signal grounded

GND

DTE and DCE public signal grounded

15

First group cable mode number

PORT0MODE0

Used to identify the connected cable type

16

First group cable mode number

PORT0MODE1

Used to identify the connected cable type

17

Signal grounded

GND

DTE and DCE public signal grounded

18

First group permits to send negative phase

J0CTS-

DTE DCE

19

First group carrier detects negative phase end

J0CD-

DTE DCE

20

First group receives Data negative  phase

RXD0-

DTE DCE

21

First group of internal clock outputs negative phase.

ECLK0B-

DTE DCE

22

First group of internal clock outputs negative phase.

ECLK0A-

DTE DCE

23

Second  group of internal clock outputs negative phase.

ECLK1A-

DTE DCE

24

Second group of internal clock outputs negative phase.

ECLK1B-

DTE DCE

25

Second group permits to transmit negative phase

J1CTS-

DTE DCE

26

Second  group carrier detects negative phase

J1CD-

DTE DCE

27

Second group receives Data negative  phase

RXD1-

DTE DCE

28

Second group of data circuit device is ready for negative phase.

J1DSR-

DTE DCE

29

Signal grounded

GND

DTE and DCE public signal grounded

30

Second group cable mode number

PORT1MODE1

Used to identify the type of the cable connected

31

Second group cable mode number

PORT1MODE2

Used to identify the type of the cable connected

32

Signal grounded

GND

DTE and DCE public signal grounded

33

Second group sends Data positive phase

TXD1+

DTE DCE

34

Second group receives timer positive phase

RXC1+

DTE DCE

35

Second group receives timer negative phase

RXC1-

DTE DCE

36

Second group sends timer positive phase

TXC1+

DTE DCE

37

Second group sends timer negative phase

TXC1-

DTE DCE

38

First group receives timer positive phase

RXC0+

DTE DCE

39

First group receives timer negative phase

RXC0-

DTE DCE

40

First group sends timer positive phase

TXC0+

DTE DCE

41

First group sends timer negative phase

TXC0-

DTE DCE

42

First group data circuit device is ready for positive phase

J0DSR+

DTE DCE

43

First group data circuit device is ready for negative phase

J0DSR-

DTE DCE

44

Signal grounded

GND

DTE and DCE public signal grounded

45

First group cable mode number

PORT0MODE2

Used to identify the connected cable type

46

First group cable mode number

PORT0MODE3

Used to identify the connected cable type

47

Signal grounded

GND

DTE and DCE public signal grounded

48

First group requests to transmit negative phase

J0RTS-

DTE DCE

49

First group requests to transmit positive phase

J0RTS+

DTE DCE

50

First group data terminal is ready for negative phase

J0DTR-

DTE DCE

51

First group data terminal is ready for positive phase

J0DTR+

DTE DCE

52

First group sends data negative phase

TXD0-

DTE DCE

53

First group sends data positive phase

TXD0+

DTE DCE

54

Second group requests to transmit negative phase

J1RTS-

DTE DCE

55

Second group requests to transmit positive phase

J1RTS+

DTE DCE

56

Second group data terminal is ready for negative phase

J1DTR-

DTE DCE

57

Second group data terminal is ready for positive phase

J1DTR+

DTE DCE

58

Second group sends data negative phase

TXD1-

DTE DCEV35

59

Signal ground

GND

DTE and DCE public signal grounded

60

Second group cable mode number

PORT1MODE3

Used to identify the connected cable type

 

The one-transfer-two cable used to connect the external equipment and differentiated serial port have three kinds: V.36(EIA/TIA-449) 2 in 1cable,X.21 2 in 1 cable with the number RLX21T01,EIA-530 2 in 1 cable.

The picture of V.36(EIA/TIA-449 2 in 1 cable:

 

 

 

 

Picture of  X.21 2 in 1 cable (number  RLX21T01):

 

 

Picture of EIA-530 2 in 1 cable  :