Datasheet

-4 Cisco IGX 8400 Series Installation and Configuration, Release 9.3.0
Y1 Trunk Cabling
Table C-10 and Table C-11 describe the Y1 cable and the connector pin assignments, respectively.
Table C-10 Japanese Y1 Cabling
Table C-11 Y Trunk Connector Pin Assignments (Balanced)
Subrate (SR) Cabling
This section lists general data for the subrate cabling and the pinouts for different types of interfaces
that support subrate operation. Table C-12 contains general specifications for the subrate cabling.
Table C-13, Table C-14, and Table C-15 list the pinouts for V.11, V.35, and EIA/TIA-449 interfaces,
respectively.
Table C-12 Subrate Trunk Cabling Specification
Pin No. Description
Cable Type: 110 ohm twisted pair, balanced operation. Two cable pairs
(1 transmit, 1 receive) per Y1 line.
Cable Connection: Male DB-15. See Table C-11 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.
Pin No. Description
2 Transmit Tip T(A)
9 Transmit Ring T(B)
4 Receive Tip R(A)
11 Receive Ring R(B)
1 Shield
Cable Parameter Description
Cable Type: 100–120-ohm twisted pair telephone cable.
Cable Connector: V.11, DB-15 subminiature, male.
V.35, 34 pin M block (Winchester), male.
MIL188/RS-449, DB-37 subminiature, male.
See Table C-13 through Table C-15 for pinouts.
Max. Cable Length: Depends on operating speed. Ranges are 400 meters for 256 Kbps though
50 meters for 1.92 Mbps.