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Table of Contents

Cabling Summary

Cabling Summary

Introduction

This appendix provides details on the IGX cabling required to connect customer devices and lines to the IGX node.

Note In all cable references, the transmit direction is from the IGX, and receive is to the IGX.

T1 Cabling

Trunk cables connect the customer DSX-1 crossconnect point or T1-E1 Channel Service Unit to the IGX node at the BC-T1 or BC-E1 back card. Refer to Table C-1 for details.

Note The transmit direction is towards the T1 trunk.

Table C-1: T1 Trunk/Circuit Line Cabling Specification

Cable Parameter

Description

Cable Type:

Western Electric 22 AWG, ABAM individually shielded twisted pair. Two pair per T1 line (1 transmit and 1 receive).

Cable Connector:

Male DB-15 subminiature. See Table C-2 for pinouts. The connector pinouts are the same for both the BA-T1 and the MT3 Distribution Panel.

Max. Cable Length:

533 ft (162 m.) maximum between the IGX and the first repeater or CSU.
Table C-2: T1 Connector Pin Assignments
Pin # Description

1

Transmit, Tip

2

Transmit Pair Shield

3

Receive, Tip

4

Receive Pair Shield

9

Transmit, Ring

11

Receive, Ring

E1 Cabling

E1 trunk cables connect the customer DSX-1 crossconnect point or E1 Channel Service Unit to the IGX node at the BC-E1 back card.


Table C-3: E1 Trunk/Circuit Line Cabling Specification
Cable Parameter Description

Cable Type:

75-ohm coaxial cable for unbalanced connection or 100-120-ohm twisted pair for balanced connection. With unbalanced cables, two cables per E1 line are required (1 transmit, 1 receive).

Cable Connector:

Two female BNC for unbalanced connection; male DB15 for balanced connection. See Table C-4 and Table C-5 for pinouts.

Max. Cable Length:

E1 output complies with G.703, so cabling must not exceed -6dB/1000 feet at 1024 kHz (applies to 75 Ohm coax or 120 Ohm twisted pair up to 350 meters or 1000 feet). Approx. 100 meters maximum between the IGX and the first repeater or CSU. Equalizer for cable length.
Table C-4: E1 Connector Pin Assignments (unbalanced)
Connector Description

Rx BNC

Receive E1 from trunk

Tx BNC

Transmit E1 to trunk
Table C-5: E1 Connector Pin Assignments (balanced)
Pin # Description

1

Transmit, Tip

2

Transmit Pair Shield

3

Receive, Tip

4

Receive Pair Shield

9

Transmit, Ring

11

Receive, Ring
Note Transmit direction is towards the E1 trunk.

Subrate (SR) Cabling


Table C-6: Subrate Trunk Cabling Specification

Cable Parameter

Description

Cable Type:

100-120-ohm twisted pair telephone cable.

Cable Connector:

V.11, DB15 subminiature, male.
V.35, 34 pin M block (Winchester), male.
MIL188/RS-449, DB-37 subminiature, male.
See Table C-7 through Table C-9 for pinouts.

Max. Cable Length:

Depends on operating speed. Ranges from 400 m. for 256 Kbps to 50 m. for 1.92 Mbps.
Table C-7: SR Connector Pin Assignments (V.11)
Pin # Description

1

Shield ground

2

TX-A

9

TX-B

3

CA

10

CB

4

RX-A

11

RX-B

5

IA

12

IB

6

SA

13

SB

7

not used

8

Signal ground

14

not used

15

not used
Table C-8: SR Connector Pin Assignments (V.35)
Pin # Name Source Description

A

Gnd.

both

Protective (Shield) ground

B

Sig. Gnd.

both

Signal ground

C

RTS

DTE

Request to Send

D

CTS

DCE

Clear to Send

E

DSR

DCE

Data Set Ready

F

DCD

DCE

Data Carrier Detect (RLSD)

H

DTR

DTE

Data Terminal Ready

J

RI

DCE

Ring Indicator

K

TM

DCE

Test Mode

L-N

not used

P/S

TxD

DTE

Transmit Data from DTE

R/T

RxD

DCE

Received Data to DTE

U/W

XTC

DTE

External Transmitter Clock

V/X

RxC

DCE

Receiver Clock

Y/AA

TxC

DCE

Transmitter Clock

BB-EE

not used
Table C-9: SR Connector Pin Assignments (RS-449)
Pin # IGX Name EIA Name Source Description

1

Frm. Gnd.

Both

Shield Ground

2

SI

SI

DCE

Signaling Rate Indicator (to DTE)

4/22

TxD

SD

DTE

Transmit Data from DTE

5/23

TxC

ST

DCE

Transmitter Clock

6/24

RxD

RD

DCE

Received Data to DTE

7/25

RTS

RS

DTE

Request to Send

8/26

RxC

RT

DCE

Receiver Clock

9/27

CTS

CS

DCE

Clear to Send

10

LL

LL

DTE

Local Loopback

11/29

DSR

DM

DCE

Data Set Ready

12/30

DTR

TR

DTE

Data Terminal Ready

13/31

DCD

RR

DCE

Data Carrier Detect (RLSD)

14

RL

RL

DTE

Remote Loopback

15

RI

IC

DCE

Ring Indicator

16

SF

SF

DTE

Signal Rate Select (to DCE)

17/35

XTC

TT

DTE

External Transmitter Clock

18

TM

TM

DCE

Test Mode

19

Sig. Gnd.

SG

Both

Signal Ground

20

RC

DCE

Receive Common

28

BSY

IS

DTE

Busy (in service)

32

SS

SS

DTE

Select Standby

33

SQ

SQ

DCE

Signal Quality Detect

34

NS

NS

DTE

New Synchronization

36

SB

SB

DCE

Standby Indicator

37

SC

DTE

Send Common

3, 21

Spare

T3/E3 Cabling

Cables that support T3/E3 rates connect to back cards AIT-T3, AIT-E3 trunk, UAI-1T3-BC, or UAI-1E3-BC. These cables can connect a back card to a either a DSX-3 cross-connect point, another back card in a co-located node, or a BPX node at the LM-3T3 back card.


Table C-10: T3 /E3 Trunk Cables
Cable Parameter Description

Type:

75-ohm coax cable (RG-59 B/U for short runs, AT&T 734A for longer runs). Two per T3/E3 line (XMT and RCV).The chosen cable has frequency/attenuation characteristics that follow a

f law with a maximum attenuation of 6 dB at 1024 KHz.

Max. Length:

450 feet max. between the BTM back card and the DSX-3 point, or BTM trunk card.

Connector

Female BNC; Rx is receive T3/E3 to BTM back card, Tx is transmit T3/E3 to DSX-3 cross-connect.
Table C-11: T3 Connector Pin Assignments
Connector Description

Rx BNC

Receive T3 from trunk

Tx BNC

Transmit T3 to trunk

Data Cabling

Cables for use with the LDM and SDM for synchronous and asynchronous data circuits are specified in Table C-12.


Table C-12: Synchronous Data Cables
Cable Parameter Description

Cable Type:

Standard RS-232C/D (V.24), V.35, or RS-449/422 (with adaptor cable for X.21).

Cable Connectors:

RS-232C/D (V.24): DB-25 Subminiature, male.
V.35: 34 pin M block-type (Winchester), male.
RS-449/422: DB-37 Subminiature, male. See Table C-13 through Table C-22 for pinouts.

Max. Cable Length:

Not to exceed interface standards.

SDI RS-232D Port Pin Assignments

Table C-13 contains a listing of IGX RS-232D Port pin assignments for the SDI data card. A standard RS-232 cable is used for this application.


Table C-13: SDI RS-232D Port Pin Assignments
Pin # IGX Name EIA Name Source Description

1

Frame Gnd.

AA

Both

Frame Ground

2

TxD

BA

DTE

Transmit Data from DTE

3

RxD

BB

DCE

Received Data to DTE

4

RTS

CA

DTE

Request to Send

5

CTS

CB

DCE

Clear to Send

6

DSR

CC

DCE

Data Set Ready

7

Signal Ground

8

DCD

CF

DCE

Data Carrier Detect (RLSD)

9

+VS

Both

+12 volt test

10

-VS

Both

-12 volt test

11

QM

DCE

Equalizer Mode (to DTE only)

12

SDCD

SCF

DCE

Secondary Data Carrier Detect

13

SCTS

SCB

DCE

Secondary Clear to Send

14

STxD

SBA

DTE

Secondary Transmit Data

15

TxC

DB

DCE

Transmitter Clock

16

SRxD

SBB

DCE

Secondary Received Data

17

RxC

DD

DCE

Receiver Clock

18

RL

DTE

Remote Loop Back

19

SRTS

SCA

DTE

Secondary Request to Send

20

DTR

CD

DTE

Data Terminal Ready

21

SQ

CG

DCE

Signal Quality Detect

22

RI

CE

DCE

Ring Indicator

23

SF

CH

DTE

Signal Rate Select (to DCE)

23

SI

CI

DCE

Signaling Rate Indicator (to DTE)

24

XTC

DA

DTE

External Transmitter Clock

25

TST

DCE

Test Indicator

SDI RS-232C (V.24) Port Pin Assignments

Table C-14 contains a listing of IGX RS-232 Port pin assignments for the SDI data card. A standard RS-232 (V.24) cable is used for this application.


Table C-14: SDI RS-232C Port Pin Assignments
Pin # IGX Name EIA Name Source Description

1

Frame Gnd.

AA

Both

Frame Ground

2

TxD

BA

DTE

Transmit Data from DTE

3

RxD

BB

DCE

Received Data to DTE

4

RTS

CA

DTE

Request to Send

5

CTS

CB

DCE

Clear to Send

6

DSR

CC

DCE

Data Set Ready

7

Signal Ground

8

DCD

CF

DCE

Data Carrier Detect (RLSD)

9

+VS

Both

+12 volt test

10

-VS

Both

-12 volt test

11

QM Pin 11

DCE
DTE

Equalizer Mode (to DTE).
Pin 11 to (DCE)

12

SDCD

SCF

DCE

Secondary Data Carrier Detect

13

SCTS

SCB

DCE

Secondary Clear to Send

14

STxD

SBA

DTE

Secondary Transmit Data

15

TxC

DB

DCE

Transmitter Clock

16

SRxD

SBB

DCE

Secondary Received Data

17

RxC

DD

DCE

Receiver Clock

18

DCR

DCE

Divided Receiver Clock

19

SRTS

SCA

DTE

Secondary Request to Send

20

DTR

CD

DTE

Data Terminal Ready

21

SQ

CG

DCE

Signal Quality Detect

22

RI

CE

DCE

Ring Indicator

23

SFCI

CH
CI

DTE
DCE

Signal Rate Select (to DCE).
Signaling Rate Indicator (to DTE)

24

XTC

DA

DTE

External Transmitter Clock

25

BSY

DTE

Busy (in service)

SDI RS-449/422 Port Pin Assignments

Table C-15 contains a listing of IGX RS-449/422 port pin assignments. A standard RS-449 cable is used for this application unless interface is X.21.


Table C-15: SDI RS-449/422 Port Pin Assignments
Pin # IGX Name EIA Name Source Description

1

Both

Shield Ground

2

SI

SI

DCE

Signaling Rate Indicator (to DTE)

3

Spare

4/22

TxD

SD

DTE

Transmit Data from DTE

5/23

TxC

ST

DCE

Transmitter Clock

6/24

RxD

RD

DCE

Received Data to DTE

7/25

RTS

RS

DTE

Request to Send

8/26

RxC

RT

DCE

Receiver Clock

9/27

CTS

CS

DCE

Clear to Send

10

LL

LL

DTE

Local Loopback

11/29

DSR

DM

DCE

Data Set Ready

12/30

DTR

TR

DTE

Data Terminal Ready

13/31

DCD

RR

DCE

Data Carrier Detect (RLSD)

14

RL

RL

DTE

Remote Loopback

15

RI

IC

DCE

Ring Indicator

16

SF

SF

DTE

Signal Rate Select (to DCE)

17/35

XTC

TT

DTE

External Transmitter Clock

18

TM

TM

DTE

Test Mode

19

SG

Both

Signal Ground

20

RC

DCE

Receive Common

21

Spare

28

BSY

IS

DTE

Busy (in service)

32

SS

SS

DTE

Select Standby

33

SQ

SQ

DCE

Signal Quality Detect

34

NS

NS

DTE

New Synchronization

36

SB

SB

DCE

Standby Indicator

37

SC

DTE

Send Common

See Table C-16 and Table C-17 for Wire Lists for adapter cables for X.21 application. This adapter cable is available in two models: one is used when the SDI operates as a DCE and the other when the SDI operates as a DTE. It has a male DB-37 on the IGX end and a female DB-15 (DCE) or male DB-15 (DTE) on the user-end.


Table C-16: Wiring List, SDI RS-449 to X.21 Adapter Cable (for RS-449 DCE Port)
DB-37 Pin # (SDI) IGX Name DB-15 Pin # (User) Description

1

Drain

1

Frame Ground

4

TxD-A

2

Transmit Data from DTE

22

TxD-B

9

Transmit Data from DTE

6

RxD-A

4

Receive Data to DTE

24

RxD-B

11

Receive Data to DTE

7

RTS-A

3

Request to Send

25

RTS-B

10

Request to Send

9

CTS-A

5

Clear to Send

27

CTS-A

12

Clear to Send

8

RxC-A

6

Receive Clock

26

RxC-B

13

Receive Clock

19

SG

8

Signal Ground
Table C-17: Wiring List, SDI RS-449 to X.21 Adapter Cable (for RS-449 DTE Port)
DB-37 Pin # (SDI) IGX Name DB-15 Pin # (User) Description

1

Drain

1

Frame Ground

4

TxD-A

2

Transmit Data from DTE

22

TxD-B

9

Transmit Data from DTE

6

RxD-A

4

Receive Data to DTE

24

RxD-B

11

Receive Data to DTE

7

RTS-A

3

Request to Send

25

RTS-B

10

Request to Send

9

CTS-A

5

Clear to Send

27

CTS-A

12

Clear to Send

5

TxC-A

6

Transmit Clock

23

TxC-B

13

Transmit Clock

19

SG

8

Signal Ground

5 to 8

TxC-A

Receive Clock1

23 to 26

TxC-B

Receive Clock *

1Loops Receive Clock to Transmit Clock when necessary.

SDI V.35 Port Pin Assignments

Table C-18 contains a listing of IGX V.35 Port pin assignments for the SDI card. A standard V.35 cable is used for this application.


Table C-18: SDI V.35 Port Pin Assignments
Pin # Name Source Description

A

Gnd.

both

Protective (Shield) ground

B

Sig. Gnd.

both

Signal ground

C

RTS

DTE

Request to Send

D

CTS

DCE

Clear to Send

E

DSR

DCE

Data Set Ready

F

DCD

DCE

Data Carrier Detect (RLSD)

H

DTR

DTE

Data Terminal Ready

J

RI

DCE

Ring Indicator

K

TM

DCE

Test Mode

P/S

TxD

DTE

Transmit Data from DTE

R/T

RxD

DCE

Receive Data to DTE

U/W

XTC

DTE

External Transmitter Clock

V/X

RxC

DCE

Receiver Clock

Y/a

TxC

DCE

Transmitter Clock

LDI RS-232 Port Pin Assignments

Table C-19 lists the LDI RS-232 Port Pin Assignments at the DB-15 connector on the card. The LDM card supports only a limited subset of EIA control leads. The LDI is always used with a DCE or DTE DB-15 to DB-25 Adapter Cable. Refer to Table C-19 and Table C-20 for wiring lists and the pin-outs for the standard male DB-25 connector to the user data device.


Table C-19: LDI RS-232C Port Pin Assignments
Pin # IGX Name EIA Name Source Description

1

Shield

AA

Both

Frame Ground

2

TxD

BA

DTE

Transmit Data from DTE

3

CTS

CB

DCE

Clear to Send

4

RxD

BB

DCE

Received Data to DTE

5

RTS

CA

DTE

Request to Send

6

XTC

DB

DCE

Transmitter Clock

7

RxC

DD

DCE

Receiver Clock

8

SG

AB

Both

Signal Ground

9

DSR

CC

DCE

Data Set Ready

10

DTR

CD

DTE

Data Terminal Ready

11

+VS

Both

+12V test voltage

12

-VS

Both

-12V test voltage

13

DCD

CF

DCE

Data Carrier Detect (RLSD)

14

RL

DTE

Remote Loop (for modem loopback)

15

MOD

Mode Select for cable (DTE or DCE)
Table C-20: Wiring List, DB15 to DB25 Adapter Cable (LDI as DTE) 1
DB-15 Pin # (LDI) IGX Name DB-25 Pin # (User) Description

1

Frm. Gnd.

1

Frame Ground

2

RxD

3

Received Data to DTE

3

RTS

4

Request to Send

4

TxD

2

Transmit Data from DTE

5

CTS

5

Clear to Send

6

XTC

24

External Transmit Clock

7

RxC

17

Receive Clock

8

SG

7

Signal Ground

9

DTR

20

Data Terminal Ready

10

DSR

6

Data Set Ready

11

+VS

9

+12V test voltage 2

12

-VS

10

-12V test voltage 2

13

DCD

8

Data Carrier Detect (RLSD)

14

RL

21

Remote Loop output

15

MOD

n.c.

Connects internally to DB15-8

(3)

LL

18

Local Loop output


1. This may be ordered in 25' length as StrataCom Model 5626-25.
2. May be used to force a control lead permanently high or low.
3. There is no LDI local loop output. Suggest using DTR output, DB15-9.
Note Two adapter cables are available for the LDI card. The choice of cable determines whether the LDI card functions as a DCE or as a DTE. These may be ordered from StrataCom or made by the customer. Make sure the correct cable is used for the type of user device connected.

Table C-21: Wiring List, DB15 to DB25 Adapter Cable (LDI as DCE) 1
DB-15 Pin # (LDI) IGX Name DB-25 Pin # (User) Description

1

Shield

1

Frame Ground

2

TxD

2

Transmit Data from DTE

3

CTS

5

Clear to Send

4

RxD

3

Receive Data to DTE

5

RTS

4

Request to Send

6

RxC

17 *

Receive Clock, connects to DB25-15 for looped clock

7

XTC

24

External Transmit Clock

8

SG

7

Signal Ground

9

DSR

6

Data Set Ready

10

DTR

20

Data Terminal Ready

11

+VS

9

+12V test voltage (Note 2)

12

-VS

10

-12V test voltage (Note 2)

13

n.c.

n.c.

not used

14

DCD

8

Data Carrier Detect (RLSD)

15

MOD

n.c.

Mode Select, no connection for DCE cable

n.c.

TxC

15 *

Transmit Clock, connects to DB25-17 for looped clock


1. This may be ordered in a 25' length as StrataCom Model 5625-25.

LDI DDS Port Pin Assignments

Table C-22 contains a listing of DB15 DDS port pin assignments on the LDI4/DDS card. Standard twisted pair cable is used for this application.


Table C-22: DDS Connector Pinouts
Pin # Mnemonic Name Description

1

TTIP

Transmit Tip

Transmit output from the port -tip side

9

TRING

Transmit Ring

Transmit output from the port -ring side

2

GND

Ground

Ground for transmit pair shield

3

RTIP

Receive Tip

Receive input to the port -tip side

11

RRING

Receive Ring

Receive input to the port -ring side

4

GND

Ground

Ground for receive pair shield

5-8

not used

10

not used

12-15

not used

FRI V.35 Port Pin Assignments

Table C-23 contains a listing of IGX V.35 Port pin assignments for the Frame Relay FRI card. A standard V.35 cable is used for this application.


Table C-23: FRI V.35 Port Pin Assignments
Pin # Name Source Description

A

Gnd.

both

Protective (Shield) ground

B

Sig. Gnd.

both

Signal ground

C

RTS

DTE

Request to Send

D

CTS

DCE

Clear to Send

E

DSR

DCE

Data Set Ready

F

DCD

DCE

Data Carrier Detect

H

DTR

DTE

Data Terminal Ready

L

LLB

DTE

Local Loopback command to user device

N

RLB

DTE

Remote Loopback command to user device

n

TM

DTE

Test Mode indicates user device. ready for test

P/S

TxD

DTE

Transmit Data from DTE

R/T

RxD

DCE

Receive Data to DTE

U/W

XTC

DTE

External Transmitter Clock

V/X

RxC

DCE

Receiver Clock

Y/a

TxC

DCE

Transmitter Clock

V.35 DCE Female Cable Pin Assignments

Table C-24 lists the V.35 DCE female cable pin assignments.


Table C-24: UFM V.35 DCE Female Cable Pin Assignments
Signal Pin No. (from J3) Wire Pin No. (to J1) Signal

Signal ground

55/56

Shorting group

Signal ground

Signal ground

50/51

Shorting group

Signal ground

Shield ground

46

Shield

A

Shield ground

v11-TXD

17/18

Twisted Pair #1

T/R

RD

v11-TXCOUT

19/20

Twisted Pair #2

AA/Y

SCT

v11-RXCOUT

21/22

Twisted Pair #3

X/V

SCR

v11-RXCIN

25/26

Twisted Pair #4

W/U

SCTE

v11-RXD

27/28

Twisted Pair #5

S/P

SD

v28-DSR/v28-CTS

34/35

Twisted Pair #6

H/C

DTR/RTS

v28-RTS/v28-DTR

42/43

Twisted Pair #7

D/E

CTS/DSR

v28-LL-DCD/Not used

44/16

Twisted Pair #8

F/B

RLSD/—

v28-DCD-LL/Not used

33/16

Twisted Pair #9

K/B

LT/Not used

Shield ground

45

Shield

A

Shield ground

v11-TXD

3/4

Twisted Pair #1

T/R

RD

v11-TXCOUT

5/6

Twisted Pair #2

AA/Y

SCT

v11-RXCOUT

7/8

Twisted Pair #3

X/V

SCR

v11-RXCIN

29/30

Twisted Pair #4

W/U

SCTE

v11-RXD

31/32

Twisted Pair #5

S/P

SD

v28-DSR/v28-CTS

38/36

Twisted Pair #6

H/C

DTR/RTS

v28-RTS/v28-DTR

40/41

Twisted Pair #7

D/E

CTS/DSR

v28-LL-DCD/Not used

39/15

Twisted Pair #8

F/B

RLSD/—

v28-DCD-LL/Not used

37/15

Twisted Pair #9

K/B

LT/Not used
Note The CAB-2-V.35 DCE '1' Winchester connector corresponds to an odd UFM-U port and the CAB-2-V.35 DCE '2' Winchester connector corresponds to an even UFM-Uport.

V.35 DTE Male Cable Pin Assignments

Table C-25 lists the V.35 DTE male cable pin assignments.


Table C-25: UFM V.35 DTE Male Cable Pin Assignments
Signal Pin No. (from J3) Wire Pin No. (to J1) Signal

p2_mode_0/Ground/p2_mode_DCE

55/56/54

Shorting group

p1_mode_0/Ground/p1_mode_DCE

50/51/52

Shorting group

Shield ground

46

Shield

A

Shield ground

v11-TXD

17/18

Twisted Pair #1

S/P

SD

v11-TXCOUT

19/20

Twisted Pair #2

W/U

SCTE

v11-TXCIN

23/24

Twisted Pair #3

AA/Y

SCT

v11-RXCIN

25/26

Twisted Pair #4

X/V

SCR

v11-RXD

27/28

Twisted Pair #5

T/R

RD

v28-DSR/v28-CTS

34/35

Twisted Pair #6

E/D

DSR/CTS

v28-RTS/v28-DTR

42/43

Twisted Pair #7

C/H

RTS/DTR

v28-LL-DCD/Not used

44/16

Twisted Pair #8

K/B

LT/—

v28-DCD-LL/Not used

33/16

Twisted Pair #9

F/B

RLSD/Not used

Shield ground

45

Shield

A

Shield ground

v11-TXD

3/4

Twisted Pair #1

S/P

SD

v11-TXCOUT

5/6

Twisted Pair #2

W/U

SCTE

v11-TXCIN

13/14

Twisted Pair #3

AA/Y

SCT

v11-TXCIN/v11-RXCIN

29/30

Twisted Pair #4

X/V

SCR

v11-RXD

31/32

Twisted Pair #5

T/R

RD

v28-DSR/v28-CTS

38/36

Twisted Pair #6

E/D

DSR/CTS

v28-RTS/v28-DTR

42/43

Twisted Pair #7

C/H

RTS/DTR

v28-LL-DCD/Not used

39/15

Twisted Pair #8

K/B

LT/—

v28-DCD-LL/Not used

37/15

Twisted Pair #9

F/B

RLSD/Not used
Note The CAB-2-V.35 DTE '1' Winchester connector corresponds to an odd UFM-U port and the CAB-2-V.35 DTE '2' Winchester connector corresponds to an even UFM-U port.

Redundancy Cabling

The redundancy cables are a special "Y" cable available from StrataCom. They are required for redundant data and trunk interfaces. Table C-26 lists the Y-cables used for redundancy for various IGX back cards.


Table C-26: Redundancy Y-Cables
Cable Used On StrataCom P/N

RS-232C

SDI

5624

RS-232D

SDI

5624

RS-232

LDI

5629

V.35

SDI

5635

V.35

SDI

special DTE/DCE jumper

RS-422/449

SDI

5644

T1

BC-T1

5607

E1

BC-E1

5685

Power Cabling

This section describes AC and DC power cabling between the IGX and the power source. Source-end connector information is not available for all countries, so local codes must be known or obtained by either the customer or installer.

AC Power Cabling

Cable:

StrataCom provides a 6-foot (1.8m), 3-conductor cord with an IEC 320 C-19 appliance coupler for mating with the IGX on the system end. The other end of the power cord should be a grounding-type attachment plug as described in the paragraphs that follow.

Connector:

For North America and Japan: For IGX 16/32: NEMA L6-20 Twist Lock

For IGX 8: NEMA L6-20 Twist Lock or NEMA 5-15

For Continental Europe: CEE 7/7 (Schuko)

For Italy: CEI 23-16/VII (16 Amp plug)

For United Kingdom and Ireland: BS 1363

For Australia and New Zealand: AS 3112

For those countries not appearing in the preceding list, use a power cord with an IEC 320 C-19 appliance coupler for the system-end and an appropriate grounding-type attachment plug at the other end in accordance with local standards.

DC Power Cabling

Cable:

Customer provides 3-conductor cord. The other end of the power cord should be a grounding-type attachment. The wire gauge is 10 to 12 AWG or 4 sq. mm.

Connector:

At the system end, StrataCom provides a pluggable wire block with screw-type clamping for the three conductors. The customer or installer attaches the customer supplied wiring to this block.

SCM Cabling

This cabling connects the Network Management ports on the SCM to StrataView Network Management computers, control terminals, and modems. It is also used for external clock inputs from a clock source.

Auxiliary and Control Port Cabling

Interface:

The IGX SCM auxiliary and control ports are configured as an RS-232 DCE port.

Suggested Cable:

24 AWG, 25-pair. A straight-through RS-232 cable is used for a terminal or printer connection. A null modem cable (Figure C-1) is needed when interfacing with modems on either port.

Cable Length:

50 feet (15 m.) max.

Cable Connector:

DB-25, subminiature, male. Table C-27 contains a list of the port pin assignments.


Table C-27: SCM AUX. and CONT. Port Pin Assignments
Pin# Name Source Description

1

FG

both

Frame Ground

2

TxD

DTE

Transmit Data

3

RxD

DCE

Receive Data

4

RTS

DTE

Request to Send

5

CTS

DCE

Clear to Send

6

DSR

DCE

Data Set Ready

7

SG

both

Signal Ground

8

CD

DCE

Carrier Detect

20

DTR

DTE

Data Term Ready

Null Modem Cable

Figure C-1 shows a null modem cable that connects some of the 1200 and 2400 baud modems to the IGX Control and Auxiliary ports.


Figure C-1: Null Modem Cable

External Clock Input Cabling

Two separate clock inputs exist, and can be used simultaneously on the IGX. They are labelled External-1 and External-2. Both clock inputs require an EIA/TIA 422 balanced square wave signal at either 1.544 or 2.048 MB per second.

Note Standard DS1 or E1 BITS clock sources using AMI bipolar pulse stream signals are not compatible with IGX external clock inputs.


Table C-28: External Clock Cabling
Cable Parameter Description

Interface

Balanced EIA/TIA 422

Suggested cable

24 AWG, individually shielded, 1- or 2-pair

Cable connector

DB-15, subminiature, male. See Table C-29 for pinouts

Maximum cable length

50 ft (15 m)


Table C-29: External Clock Connector Pin Assignments
Pin No. Description

1

External Clk 1-A

9

External Clk 1-B

2

Shield ground pair 1

3

External Clk 2-A

11

External Clk 2-B

4

Shield ground pair 1

5

8.192 MHz test output (factory use only)

External Alarm Cabling

This cable is for connecting network alarm outputs to the DTI Faceplate, or the ARI card Alarm connector only. Table C-30 lists the pinouts for the network alarm outputs.


Table C-30: External Alarm Interface
Parameter Description

Interface:

Dry-contact relay closure.

Wire:

24 AWG, shielded, 10-pair.

Connector:

DB-37, Subminiature, male
Table C-31: Network Alarm Pin Assignments
Pin# Name Description

1

CHASSIS

Chassis Ground

2

Reserved

3

NWMAJA

Network Major Alarm

4

NWMAJC

Network Major Alarm

5

Reserved

6

Reserved

7

Reserved

8

Reserved

9

Reserved

10

MNVISA

Minor Visual Alarm

11

Reserved

12

MNVISC

Minor Visual Alarm

13

Reserved

14

Unused

15

Unused

16

MJAUDC

Major Audible Alarm

17

MJAUDA

Major Audible Alarm

18

Unused

19

Unused

20

Reserved

21

Reserved

22

Reserved

23

NWMINA

Network Minor Alarm

24

Reserved

25

NWMINC

Network Minor Alarm

26

Reserved

27

Reserved

28

Reserved

29

MNAUDA

Minor Audible Alarm

30

Reserved

31

MNAUDC

Minor Audible Alarm

32

Unused

33

Unused

34

Unused

35

MJVISC

Major Visual Alarm

36

MJVISA

Major Visual Alarm

37

Unused
Note Pins whose names end in A are normally open. Pins whose names end in C are common.

Standard IGX Cables

Table C-32 lists the various cables that may be ordered directly from StrataCom. Cable lengths are specified as a suffix to the IGX model number. For example 5610-50 indicates a 50 foot cable. Cables are generally available in standard lengths of 10 ft (3 m.), 25 ft (7.6 m.), 50 ft (15 m.), 75 ft (22.8 m.) and 100 ft (30 m.) Lengths of 101 ft. (30 m.) to 600 ft. (183 m.) are available on a special order.

When applicable, the connector gender (male-female) will be indicated as well as the number of pins. For example T1/M15-M15 indicates a cable terminated with a male DB15 at both ends.


Table C-32: Standard IGX Cables Available from StrataCom
Model# Description Usage

5605

T1, 12 pair, pigtail-pigtail

T1 trunk, general

5608

T1, pigtail to RJ48

CSU to telco demarc

5618

T1, F15 to RJ48

CSU to telco demarc

5619

T1, RJ48 to RJ48

CSU to telco demarc

5609

T1, 2 pair, pigtail-pigtail, Teflon

CSU to DSX; for fire resistance code

5610

T1, 2 pair, pigtail-pigtail

CSU to DSX, echo canceller to chan. bank

5611

T1/M15-pigtail

T1 trunk to CSU, DSX; external echo canceller to PBX, chan. bank.

5612

T1, F15 sliplock-pigtail

same as 5611

5613

T1/F15-pigtail

same as 5611

5614

T1/M15-M15 turnover

E1 trunk to CSU

5615

T1/M15-M15 sliplock

same as 5611

5616

T1/M15-M15

same as 5611

5617

T1/F15 sliplock-RJ48

same as 5610

5618

T1/F15-RJ48

5619

T1/RJ48-RJ48

CSU to connectorized patch panel

5680

BNC-DB15

E1 trunk

5685

T1/M15-M15 turnover, Y-cable

E1 trunk redundancy

5630

V.35/M34-F34

Subrate trunk or data circuit

5633

V.35/M34-M34

Subrate trunk or data circuit

5636

V.35 Y-cable

Subrate trunk or data circuit redundancy

5640

RS-422/M37-F-37

Subrate trunk or data circuit

5643

RS-422/M37-M-37

Subrate trunk or data circuit

5645

RS-422/X.21 adapter-DTE

IGX is DTE

5646

RS-422/X.21 adapter-DCE

IGX is DCE

5644

RS-422 Y-cable

Subrate trunk or data circuit redundancy

5690

X.21/V.11 DTE-M to DCE-M

Subrate trunk or data circuit

5691

X.21/V.11 DTE-M to DCE-F

Subrate trunk or data circuit

5695

X.21/DB15 Y-cable

Subrate trunk or data circuit redundancy

5620

RS-232/M25-F25

Control port to control terminal, StrataView, or ext. window device

5621

RS-232/M25-M25 special

Control or Aux. port to modem

5622

RS-232/M25-M25 special

Aux. port to Okidata 184 printer

5623

RS-232/M25-M25

Aux. port to ext. window device

5625

V.35/M15-F25

LDI8 (DCE) to data device

5626

V.35/M15-M25

LDI8 (DTE) to data device

5628

V.35/M15-F25 adapter

LDI8 (DCE) to data device

5627

V.35/M15-F25 adapter

LDI8 (DTE) to data device

5629

RS 232/M15-M15, Y-cable

LDI redundancy

5651

F50 Amphenol-M50 Amphenol

VF, chan. bank to P66 block

5660

Punch-down block w/F50 Amphenol

VF termination

5601

Ground cable

DC

5670

Molex-pigtail

DC

5671

Spade lug-pigtail

DC
Note Most cables listed as T1 can also be used for E1 service.

TTC JJ-20 (J1) Cabling


Table C-33: Japanese J1 Cabling
Cable Parameter Description

Cable Type:

110 ohm twisted pair for balanced operation. Two cable pairs (1 transmit, 1 receive) per TTC line.

Cable Connection:

Male DB15 for balanced connection. See Table C-34 for pinouts.

Max. Cable Length:

Maximum cable length is determined by the loss in the cable. The maximum permissible loss is 13 dB.
Table C-34: TTC Connector Pin Assignments (balanced)
Pin # Description

2

Send Tip S(T)

9

Send Ring S(R)

4

Receive Tip R(T)

11

Receive Ring R(R)

1

Ground
Note Transmit (send) direction is towards the IGX.

"Y" (Y1) Trunk Cabling


Table C-35: Japanese Y1 Cabling
Pin # Description

Cable Type:

110 ohm twisted pair, balanced operation. Two cable pairs
(1 transmit, 1 receive) per Y1 line.

Cable Connection:

Male DB15. See Table C-36 for pinouts.

Max. Cable Length:

Maximum cable length is determined by Vp-p (Voltage peak-to-peak). The maximum permissible value is 1 Vp-p.
Table C-36: "Y" Trunk Connector Pin Assignments (balanced)
Pin # Description

2

Transmit Tip T(A)

9

Transmit Ring T(B)

4

Receive Tip R(A)

11

Receive Ring R(B)

1

Shield
Note Transmit direction is towards the "Y" trunk.

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