Black-box 5000 User Manual download pdf (Page 114)

Multiserver 5000

112

10.5 Asynchronous Connections

The following five methods of switching are

supported for async ports:

Force The network operator configures a

Connection dedicated connection between two

ports in the network.

Fixed The network operator configures

Destination the destination for the user’s

channel.

Class The user enters a mnemonic,

configured as a class name, which is

defined as one or more ports in the

network. (Refer to Section 10.8,

Classes, for class information.)

Node/Class The user enters the destination node

and the class desired. (Refer to

Section 10.8, Classes, for class

information.)

Matrix The user enters the destination node

and channel number desired.

Generally, the initial steps are the same for a

terminal connecting to the Multiserver and its

feeder muxes. The exception is force-connection.

The force-connection is transparent to the user, and

no action with the Multiserver is necessary.

For other types of connections, follow these initial

procedures:

1. Turn on the terminal and enter the sign-

on character (if applicable).

2. The Channel Password prompt will appear

on the screen.

3. Enter the password (if one has been

configured).

4. If one is configured, the welcome message

will appear when the connection to the

Multiserver is complete.

SYNC FORCE-CONNECTIONS

In async force-connections, the configuration of the

port need not exactly match; however, both ports

must be configured as async. If a port is force-

connected, no other port can access it through

switching requests.

When force-connecting an async port, be sure that

the Remote CTS Control (option 2 of the Extended

Features Menu) is set for the device attached to the

port. (See Section 9.3, Asynchronous Channels,

and Table 9-12.) If it is not, it may not be possible

to connect to the Command Facility once the force-

connection is made.

Once an async channel is force-connected, the only

way it can access the Command Facility is via ^X

<break> (or ^X ^Y, if enabled). You will not get

the ENTER CLASS prompt.

For each port force-disconnected, a port-event

message will be generated in the log.

Disconnecting one side of the channel

automatically disconnects the other side; you need

only disconnect one side. Ports will be immediately

disconnected, interrupting activity on the channels

selected.

IXED DESTINATION CONNECTION

If a port is configured as a fixed-class connection

(option 8, Destination Node/Class, on the

Switching Parameters Menu), it will attempt to

connect to the primary class designated after the

initial steps have been completed (see Section 10.6

Asynchronous Channel Switching Parameters).

To disconnect from a fixed-destination connection,

press the <break> key three times within six

seconds.

LASS CONNECTION

After the initial steps are completed, you can

request a class connection for a particular class.

The Multiserver will search to determine if the class

is resident on itself or its attached muxes (the local

node). It will search for an available port in the

primary class and then for an available port on the

secondary class. If there are no ports available, the

Multiserver will place the call in queue for any busy

primary ports and search any remote Multiserver(s)

for the class.

If the class is not on the local Multiserver or its

feeders, then it will place a call request to the

remote Multiserver(s). A CALL IN PROGRESS

message will be sent to the user. The remote

Multiserver(s) will search through its ports and

feeders for an available port in the primary class

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