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B-5
Cisco MGX 8230 Edge Concentrator Installation and Configuration
Release 1.1.31, Part Number 78-11215-03 Rev. B0, May 2001
Appendix B Cable Specifications
Frame Relay Cabling
HSSI Port Connectors
The High Speed Serial Interface (HSSI) port connects through a female SCSI-II connector This
connector accords with ANSI/TIA/EIA-613. See Table B-10 for the pinouts.
Table B-8 X.21 Signals
Signal Name
Mode_2 Local connections
Mode_DCE Local connections
Gournd Shield Ground
O_TXD/RSC+ Transmit +
OTXD/RXD- Transmit -
O_RTS/CTS+ Control +
O_RTS/CTS- Control -
I_RDX/TXD+ Receive +
I_RXD/TXD- Receive -
ICTS/RTS+ Indication +
I_CTS/RTS- Indication -
I_RXC/TXCE+ Timing +
I_RXC/TXCE- Timing -
GND CCT Ground
Table B-9 Cable Part Numbers for MGX-FRSM-HS1/BV
Type of Cable Far End Connector Part Number
X.21 DTE male 72-1440-01
X.21 DCE fremale 72-1427-01
V.35 DTE male (standard) 72-1428-01
V.35 DTE female (atypical) 72-1436-01
V.35 DCE female (standard) 72-1429-01
V.35 DCE male (atypical) 72-1437-01
V.35 DTE-DCE 72-1441-01
Straight-through 72-1478-01
Loopback plug 72-1479-01
Table B-10 Pinouts for SCSI-II Connector
Pin No. Name Signal Function Polarity Signal Source
11 SD Send Data + DTE
36 -
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