Paradyne CSU Manual Do Utilizador

4. Configuration Options

9128-A2-GB20-80

September 2002

Generally, backup can be performed on the network interface’s frame relay link 
using a backup PVC, as well on an ISDN link; the unit does not have to have the 
ISDN DBM feature.

In this case, create a DLCI Record on the network interface that will be used for 
backup, then modify the PVC Connections or Management PVCs to add the 
alternate destination.

Using this special feature, you can set up two FrameSaver units that are 
connected back-to-back without frame relay switches between them, as in a test 
bench setup using a crossover cable.

When setting up back-to-back operation:

„

One unit must be configured for Standard operation, which is the setting for 
normal operation.

„

The other unit must be configured for Back-to-Back operation so it presents 
the network side of the UNI (user-network interface).

Only one of the units will have its operating mode changed.

 

To set up back-to-back operation:

1. On the unit to be configured for Back-to-Back operation, manually configure 

DLCIs; DLCIs should be configured before connecting the two units.

2. Access the Change Operating Mode screen.

Main Menu

→

Control

→

Change Operating Mode

3. Select Back-to-Back Operation, and respond Yes to the 

Are you sure? 

prompt.

4. Save the change.

 

To return the unit to normal operation:

1. Return to the Change Operating Mode screen and switch back to Standard 

Operation.

2. Respond Yes to the prompt and save the change. The units can be 

reconnected to a standard frame relay network.