Black Box 5000 manual 10.11 X.21 Switching Considerations

10.11 X.21 Switching Considerations

There is no special async channel configuration required for use with X.21, with the following possible exception. A special configuration is required if you are trying to connect a port on the Multiserver that requires a DTR protocol to a port on a feeder mux (configured for DTR). Even though the Multiserver can be set only for Data Activity, the port, if configured for DTR at the Connect Protocol Menu, will function as needed. Note that the port disconnects only if the user terminates a call; if the user walks away from the terminal while it is in use, DTR stays high and the link remains active. To overcome this situation, you should create a special class for this port(s) and set a No Activity timeout for it.

The following procedure shows you how to do this. (Examples of responses to a prompt are in bold.) The example assumes that the local node is named DENVER.)

1.Create a class for the DTR channel.

COMMAND FACILITY MAIN MENU [DENVER]

3 CONFIGURE LOCAL NODES

CONFIGURE LOCAL NODES [DENVER]

9 CLASS PARAMETERS

ENTER CLASS NUMBER (^X TO ABORT): 1

CHAPTER 10: Switching Configuration

ENTER CLASS NAME [] (^X TO ABORT): DTR

CLASS PARAMETERS MENU

5 CLASS NO ACTIVITY TIMEOUT

ENTER CLASS NO ACTIVITY

TIMEOUT [ 0]: 1

CLASS PARAMETERS MENU

P PREVIOUS MENU

2.Configure the port for DTR and assign it to the class.

CONFIGURE LOCAL NODES [DENVER]

2 ASYNC CHANNEL

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