Table Of Contents
Cabling Summary
Introduction
T1 Cabling
E1 Cabling
Subrate (SR) Cabling
T3/E3 Cabling
Data Cabling
SDI EIA/TIA-232D Port Pin Assignments
SDI EIA/TIA-232C (V.24) Port Pin Assignments
SDI EIA/TIA-449/422 Port Pin Assignments
SDI V.35 Port Pin Assignments
LDI EIA/TIA-232 Port Pin Assignments
FRI V.35 Port Pin Assignments
UFM Cabling
UFI X.21 and V.35 DTE Port Pin Assignments
UFI X.21 and V.35 DCE Port Pin Assignments
UFI HSSI Port Pin Assignments
V.35 DCE Female Cable Pin Assignments
V.35 DTE Male Cable Pin Assignments
Redundancy Cabling
Power Cabling
AC Power Cabling
DC Power Cabling
Piece
|
Standard
|
Cable:
|
You provide a 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, Cisco 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
Auxiliary and Control Port Cabling
Interface:
|
The IGX SCM auxiliary and control ports are configured as an EIA/TIA-232 DCE port.
|
Suggested Cable:
|
24 AWG, 25-pair. A straight-through EIA/TIA-232 cable is used for a terminal or printer connection. A null modem cable ( ) is needed when interfacing with modems on either port.
|
Cable Length:
|
50 feet (15 m.) max.
|
Cable Connector:
|
DB-25, subminiature, male. contains a list of the port pin assignments.
|
Null Modem Cable
External Clock Input Cabling
External Alarm Cabling
Standard IGX Cables
TTC JJ-20 (J1) Cabling
"Y" (Y1) Trunk Cabling
Cabling Summary
Introduction
This appendix provides details on the cabling required to connect customer devices to an IGX node. In all cable references, the transmit direction is from the node, and receive is to the node.
Note 
EIA/TIA-232 and EIA/TIA-449 existed as recommended standards RS-232 and RS-449 before the Electronics Industries Association (EIA) and Telecommunications Industry Association (TIA) accepted them as standards.
T1 Cabling
Trunk cables connect the customer DSX-1 crossconnect point or T1-E1 Channel Service Unit (CSU) to the IGX node at the BC-T1 or BC-E1 back card. Refer to Table C-1 for details.
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 for pinouts. The connector pinouts are the same for both the BA-T1 and the MT3 Distribution Panel.
|
Maximum Cable Length:
|
533 ft (162 m.) maximum between the node and the first repeater or CSU.
|
Table C-2 T1 Connector Pin Assignments
Pin Number
|
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 (CSU) to the node at the back card. Note that variations exist in the pin assignments for some interfaces: and show the D-connector pinouts for the CVM, NTM, UFM, UVM, and FRM
Table C-3 E1 Trunk/Circuit Line Cabling Specification
Cable Parameter
|
Description
|
Cable Type:
|
75-ohm coaxial cable for balanced line or 100-120-ohm twisted pair for unbalanced line. Balanced lines use two cables per E1 port.
|
Cable Connector:
|
Two female BNC for balanced connection; male DB15 for unbalanced connection. See , , and for pinouts.
|
Max. Cable Length:
|
E1 output complies with G.703, so attenuation must not exceed -6dB at 1024 kHz (applies to 75 Ohm coax or 120 Ohm twisted pair). Maximum length is 100 meters between the IGX node and the first repeater or CSU.
|
Table C-4 E1 Connector Pin Assignments (Balanced)
Connector
|
Description
|
Rx BNC
|
Receive E1 from trunk
|
Tx BNC
|
Transmit E1 to trunk
|
Table C-5 E1 D-Connector Pinout, CVM and NTM Back Cards
Pin #
|
Description
|
1
|
Receive, Tip
|
2
|
Receive Pair Shield
|
3
|
Transmit, Tip
|
9
|
Receive, Ring
|
10
|
Transmit Pair Shield
|
11
|
Transmit, Ring
|
Table C-6 E1 D-Connector Pinout, FRM, UFM, and UVM Back Cards
Pin #
|
Description
|
1
|
Transmit, Tip
|
2
|
Transmit Pair Shield
|
3
|
Receive, Tip
|
4
|
Receive Pair Shield
|
9
|
Transmit, Ring
|
11
|
Receive, Ring
|
Subrate (SR) Cabling
This section lists general data for the subrate cabling and the pinouts for different types of interfaces that support subrate operation. contains general specifications for the subrate cabling. , , and list the pinouts for V.11, V.35, and EIA/TIA-449 interfaces, respectively.
Table C-7 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 through for pinouts.
|
Max. Cable Length:
|
Depends on operating speed. Ranges are 400 meters for 256 Kbps though
50 meters for 1.92 Mbps.
|
Table C-8 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-9 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-10 SR Connector Pin Assignments (EIA/TIA-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-11 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 чf 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-12 T3 Connector Pin Assignments
Connector
|
Description
|
Rx BNC
|
Receive T3 from trunk
|
Tx BNC
|
Transmit T3 to trunk
|
Data Cabling
This section contains through . These tables describe the applicable cables for the LDM and HDM card sets for synchronous and asynchronous data circuits.
Table C-13 Synchronous Data Cables
Cable Parameter
|
Description
|
Cable Type:
|
Standard EIA/TIA-232C/D (V.24), V.35, or EIA/TIA-449/422 (with adaptor cable for X.21).
|
Cable Connectors:
|
EIA/TIA-232C/D (V.24): DB-25 Subminiature, male.
V.35: 34 pin M block-type (Winchester), male.
EIA/TIA-449/422: DB-37 Subminiature, male.
|
Max. Cable Length:
|
Not to exceed interface standards.
|
SDI EIA/TIA-232D Port Pin Assignments
contains a listing of IGX EIA/TIA-232D port pin assignments for the SDI data card. A standard EIA/TIA-232 cable works in this application.
Table C-14 SDI EIA/TIA-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 EIA/TIA-232C (V.24) Port Pin Assignments
contains a listing of IGX EIA/TIA-232C port pin assignments for the SDI data card. A standard EIA/TIA-232 (V.24) cable is used for this application.
Table C-15 SDI EIA/TIA-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 EIA/TIA-449/422 Port Pin Assignments
contains a listing of IGX EIA/TIA-449/422 port pin assignments. A standard EIA/TIA-449 cable is used for this application unless the interface is X.21.
Table C-16 SDI EIA/TIA-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 and 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-17
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
|
Wiring List, SDI EIA/TIA-449-to-X.21 Adapter Cable (for EIA/TIA-449 DCE)
Table C-18 Wiring List, SDI EIA/TIA-449 to X.21 Adapter Cable (for EIA/TIA-449 DTE)
)
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 *
|
SDI V.35 Port Pin Assignments
contains a listing of IGX V.35 Port pin assignments for the SDI card. A standard V.35 cable works this application.
Table C-19
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
|
SDI V.35 Port Pin Assignments
LDI EIA/TIA-232 Port Pin Assignments
lists the LDI EIA/TIA-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 and for wiring lists and the pin-outs for the standard male DB-25 connector to the user data device.
Table C-20 LDI EIA/TIA-232 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-21 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 3
|
|
|
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 Cisco Systems or made by the customer. Make sure the correct cable is used for the type of user device connected.
Table C-22 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 DB25-152
|
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 3
|
12
|
-VS
|
10
|
-12V test voltage 3
|
13
|
not connected
|
not connected
|
not used
|
14
|
DCD
|
8
|
Data Carrier Detect (RLSD)
|
15
|
MOD
|
n.c.
|
Mode Select, no connection for DCE cable
|
not connected 2
|
TxC
|
15
|
Transmit Clock, connects to DB25-17 2
|
|
|
FRI V.35 Port Pin Assignments
contains a listing of IGX V.35 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
|
UFM Cabling
lists the cables that can connect to the UFM back cards for synchronous and asynchronous circuits.
Table C-24 UFM Data Cables
Cable Parameter
|
Description
|
Cable Type:
|
Standard V.35 or X.21.
|
Cable Connectors:
|
X.21 DTE: DB-60, male. (provides two X.21 ports)
X.21 DCE: DB-60, male. (provides two X.21 ports)
V.35 DTE: DB-60, male. (provides two V.35 ports)
V.35 DCE: DB-60, male. (provides two V.35 ports
HSSI: DB-50, Male
|
Maximum Cable Length:
|
Not to exceed interface standards.
|
UFI X.21 and V.35 DTE Port Pin Assignments
lists the UFI X.21 and V.35 DTE pin assignments at the DB-60 connector on the card.
Table C-25 UFI X.21 and V.35 DTE Port Pin Assignments
Pin #
|
Name
|
Source
|
Direction
|
Description
|
7/14
|
SG
|
Both
|
—
|
Signal Ground
|
9/22
|
RxC
|
DCE
|
Input
|
Receive Clock
|
5/18
|
TxC
|
DCE
|
Input
|
Transmit Clock
|
3/16
|
RxD
|
DCE
|
Input
|
Receive Data
|
2/15
|
TxD
|
DTE
|
Output
|
Transmit Data
|
6/19
|
XTC
|
DTE
|
Output
|
External Transmit Clock
|
4/17
|
DTR
|
DTE
|
Output
|
Data Terminal Ready
|
10/23
|
DSR
|
DCE
|
Input
|
Data Set Ready
|
11
|
RTS
|
DTE
|
Output
|
Request To Send
|
24
|
CTS
|
DCE
|
Input
|
Clear To Send
|
12
|
LLB
|
DTE
|
Output
|
Local Loopback Command
|
13
|
RLB
|
DTE
|
Output
|
Remote Loopback
|
26
|
TM
|
DTE
|
Output
|
Test Mode
|
20
|
SG
|
Both
|
—
|
Signal Ground
|
25
|
DCD
|
DCE
|
Input
|
Data Carrier Detect
|
1
|
—
|
DCE
|
Input
|
Port in DCE Mode
|
UFI X.21 and V.35 DCE Port Pin Assignments
lists the UFI X.21 and V.35 DCE pin assignments at the DB-60 connector on the card.
Table C-26 UFI X.21 and V.35 DCE port Pin Assignments
Pin #
|
Name
|
Source
|
Direction
|
Description
|
7/14
|
SG
|
Both
|
—
|
Signal Ground
|
8/21
|
RxC
|
DCE
|
Output
|
Receive Clock
|
6/19
|
TxC
|
DCE
|
Output
|
Transmit Clock
|
3/16
|
TxD
|
DTE
|
Input
|
Transmit Data
|
2/15
|
RxD
|
DCE
|
Output
|
Receive Data
|
9/22
|
XTC
|
DTE
|
Input
|
External Transmit Clock
|
4/17
|
DSR
|
DCE
|
Output
|
Data Set Ready
|
10/23
|
DTR
|
DTE
|
Input
|
Data Terminal Ready
|
11
|
CTS
|
DCE
|
Output
|
Clear To Send
|
24
|
RTS
|
DTE
|
Input
|
Request To Send
|
25
|
LLB
|
DTE
|
Input
|
Local Loopback Command
|
26
|
RLB
|
DTE
|
Input
|
Remote Loopback
|
13
|
TM
|
DTE
|
Output
|
Test Mode
|
20
|
SG
|
Both
|
—
|
Signal Ground
|
12
|
DCD
|
DCE
|
Output
|
Data Carrier Detect
|
1
|
—
|
DTE
|
Input
|
Port in DTE Mode
|
UFI HSSI Port Pin Assignments
lists the UFI HSSI pin assignments at the DB-50 connector on the card.
Table C-27 UFI HSSI Pin Assignments
Pin #
|
Name
|
Source
|
Direction
|
Description
|
1/26
|
SG
|
Both
|
—
|
Signal Ground
|
2/27
|
RT
|
DCE
|
Output
|
Receive Timing
|
3/28
|
CA
|
DCE
|
Output
|
DCE Available
|
4/29
|
RD
|
DCE
|
Output
|
Receive Data
|
5/30
|
LC
|
DTE
|
Output
|
DCE loop Request
|
6/31
|
ST
|
DCE
|
Output
|
Send Timing
|
7/32
|
SG
|
Both
|
—
|
Signal Ground
|
8/33
|
TA
|
DTE
|
Input
|
DTE Available
|
9/34
|
TT
|
DCE
|
Input
|
Terminal Timing
|
10/35
|
LA
|
DTE
|
Input
|
Loopback Circuit A
|
11/36
|
SD
|
DTE
|
Input
|
Send Data
|
12/37
|
LB
|
DTE
|
Input
|
Loopback Circuit B
|
13/38
|
SG
|
Both
|
—
|
Signal Ground
|
14/39
|
DT
|
DTE
|
Input
|
Send Timing in DTE
|
15 to 18
|
—
|
DCE
|
Output
|
Undefined: to DCE
|
19/44
|
SG
|
Both
|
—
|
Signal Ground
|
20 to 23
|
—
|
DTE
|
Input
|
Undefined: from DCE
|
24/49
|
TM
|
DTE
|
Output
|
Test Mode
|
25/50
|
SG
|
Both
|
—
|
Signal Ground
|
V.35 DCE Female Cable Pin Assignments
lists the V.35 DCE female cable pin assignments.
Table C-28 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
lists the V.35 DTE male cable pin assignments.
Table C-29 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 Cisco Systems. They are required for redundant data and trunk interfaces. lists the Y-cables used for redundancy for various IGX back cards.
Table C-30 Redundancy Y-Cables
Cable
|
Used On
|
Cisco Part Number
|
EIA/TIA-232C
|
SDI
|
5624
|
EIA/TIA-232D
|
SDI
|
5624
|
EIA/TIA-232
|
LDI
|
5629
|
V.35
|
SDI
|
5635
|
V.35
|
SDI
|
special DTE/DCE jumper
|
EIA/TIA-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
Piece
|
Standard
|
Cable:
|
Cisco 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
Piece
|
Standard
|
Cable:
|
You provide a 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, Cisco 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
SCM cabling connects the Network Management ports on the SCM to StrataView Plus Network Management computers, control terminals, and modems. This cabling also provides the connection for an external clock source.
Auxiliary and Control Port Cabling
Interface:
|
The IGX SCM auxiliary and control ports are configured as an EIA/TIA-232 DCE port.
|
Suggested Cable:
|
24 AWG, 25-pair. A straight-through EIA/TIA-232 cable is used for a terminal or printer connection. A null modem cable ( ) is needed when interfacing with modems on either port.
|
Cable Length:
|
50 feet (15 m.) max.
|
Cable Connector:
|
DB-25, subminiature, male. contains a list of the port pin assignments.
|
Table C-31 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
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-32 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 for pinouts
|
Maximum cable length
|
50 ft (15 m)
|
Table C-33 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 connects network alarm outputs to either the DTI Faceplate or the ARI card Alarm connector only. particulars for the physical interface. lists the pinouts for the network alarm outputs. In , note that pins whose names end in "A" are normally open, and pins whose names end in "C" are common.
1 External Alarm Interface
Parameter
|
Description
|
Interface:
|
Dry-contact relay closure.
|
Wire:
|
24 AWG, shielded, 10 pairs.
|
Connector:
|
DB-37, Subminiature, male
|
Table C-34 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
|
Standard IGX Cables
lists the cables that you can order directly from Cisco Systems. 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.
Where applicable, indicates the connector gender (male-female) 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-35 Standard IGX Cables Available from Cisco
Model Number
|
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
|
EIA/TIA-422/M37-F-37
|
Subrate trunk or data circuit
|
5643
|
EIA/TIA-422/M37-M-37
|
Subrate trunk or data circuit
|
5645
|
EIA/TIA-422/X.21 adapter-DTE
|
IGX is DTE
|
5646
|
EIA/TIA-422/X.21 adapter-DCE
|
IGX is DCE
|
5644
|
EIA/TIA-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
|
EIA/TIA-232/M25-F25
|
Control port to control terminal, StrataView Plus, or external window device
|
5621
|
EIA/TIA-232/M25-M25 special
|
Control or Aux. port to modem
|
5622
|
EIA/TIA-232/M25-M25 special
|
Aux. port to Okidata 184 printer
|
5623
|
EIA/TIA-232/M25-M25
|
Aux. port to ext. window device
|
5625
|
V.35/M15-F25
|
LDI8 (DCE) to data device
|
5626E
|
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
|
EIA/TIA 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-36 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 for pinouts.
|
Max. Cable Length:
|
The loss in the cable determines maximum cable length. The maximum permissible loss is 13 dB.
|
Table C-37 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
|
"Y" (Y1) Trunk Cabling
Table C-38 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 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-39 "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.
