Verilink Access Manager 2000 (896-502037-001) Product Manua Manual de usuario descargar pdf (Pagina 317)

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Activating/Deactivating CSU loopbacks

Access Manager 2000 User Manual

8-47

Deactivate Network Loopback (PLB or LLB)

This command deactivates the LLB or payload loopback (PLB) in the

direction of the network.

Send Inband Loop-Up Code To Far End

This command causes the near-end CSU to send the industry-standard

inband loop-up code to the far-end CSU.

Send Inband Loop-Down Code To Far End

This command allows the near-end CSU to send an inband loop-down

code to the far-end CSU.

Activate PLB

This command causes the CSU to activate the PLB toward the network

(NET). This loopback is performed just inside the input/output

transformers on the EQPT side of the CSU. The PLB therefore includes

most of the CSU circuitry in the looped path.

Deactivate PLB

This command deactivates a PLB in progress.

Activate EQPT Loopback (ELB

This loopback loops the CSU toward the EQPT just inside the input/

output transformers on the EQPT side. As most of the CSU circuitry is

bypassed by this loopback, ELB is useful for testing the EQPT-to-CSU

cabling.

Deactivate EQPT Loopback (ELB and RLB)

This command deactivates an ELB or RLB in progress.

Activate Framed ALL-ONEs Signal To Network

This command causes framed ALL-ONEs test signal to be transmitted to

the network. This signal can be used in conjunction with a far-end LLB or

PLB to do limited testing of the network and far-end CSU. An upgraded

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