User`s guide

Diagnostics
6-6
5100-A2-GB20-00
November 1996
Remote Loopback
The remote loopback enables data received from the CO ISA bus to be looped
back by the firmware process on the CP card. This will also be a unidirectional
loopback, meaning that data is transmitted back to the PC end of the connection
only. Note that any data arriving over the DSL link will be dropped in this mode of
operation. See
Diagnostics in Chapter 4 for the procedure to run a loopback test.
NOTE:
A remote loopback should not be run on a CO card if the CP card with which
it is communicating is running a local loopback.
ISA
Bus
DSL Link
CO Card
496-1498
7
ISA
Bus
CP Card
DSL Link
Network