Cisco 4500M Guide d'installation Page 215

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Cabling Specifications A-75
HSSI Cable Pinouts
In addition to these cables, some connections require bare-wire connections (directly to
terminal posts). See the E1-G.703/G.704 network processor module configuration note for
complete information.
HSSI Cable Pinouts
Two types of cables are available for use with an HSSI network processor module:
CAB-HSI1=, an HSSI cable used to connect your router to an external DSU (and the
HSSI network)
CAB-HNUL=, a null-modem HSSI cable used to connect two routers back-to-back.
The Cisco 4000 series router can connect a Cisco 7000 family HIP, PA-H, or PA-2H.
HSSI Interface Cable
Figure A-14 shows the HSSI cable (product number CAB-HSI1= and part number
72-0710-xx). Table A-27 provides pinouts. The cable has a male DB-50 (SCSI) connector
on each end.
Figure A-14 HSSI Interface Cable Connectors
Table A-27 HSSI Interface Cable Pinouts
Signal Name
Pin No. + Side
(Router End)
Direction
1
Pin No. – Side
(DSU End)
SG (Signal Ground) 1 26
RT (Receive Timing) 2 <— 27
H5691
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