Back-to-Back Test Cable
You can use a back-to-back, synchronous test cable to connect any HP
router having a (62-pin) synchronous WAN port to another HP router (or
an HP Remote Bridge) having the same port type, without using a
modem eliminator. The cable, which can be used for demonstrations,
instruction, or testing the router, uses the RS-422 signal level.
Note The WAN port on one router must have the Clock Source parameter in
the configuration set to External, and the WAN port on the other router
must have it set to Internal.
A 5-meter, back-to-back, synchronous test cable is available from HP
(part number 5061-2556). If you want to purchase a non-HP cable or
make your own cable, refer to the next page, which shows the minimum
pin-outs for the cable. The maximum length for this cable is 60 meters
(200 feet).
Cables and Connectors
Cable and Connector Pin-Outs
A-8
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