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O
 
O
OAM F5 Loopback Test
An Operational, Administration and Maintenance Function 5 test is used to test the connection
between two DSL devices. First, the DSL devices establish a virtual circuit. Then the local device
sends an ATM F5 cell to be returned by the remote DSL device (both DSL devices must support
ATM F5 in order to use this test).
Off Hook
Off hook means that the telephone is in use.
On Hook
On hook means that the telephone is not in use.

 

 
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