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The STARLAN NETWORK View of System 25
From the STARLAN NETWORK, the STARLAN CP functions like a STARLAN NETWORK
workstation equipped with a Network Access Unit (NAU). The NAU enables STARLAN
NETWORK workstations and servers to access and exchange data over the network. Plug
number 1 of the STARLAN CP octopus cable should be connected to an “IN” jack on the
Network Extension Unit (NEU) (see Figures 2-43 and 2-44).
The System 25 View of a STARLAN NETWORK
From System 25, the STARLAN CP looks and functions like a TN726 DLC (with only four
ports). The STARLAN CP differs from the DLC in that, when it is dialed, the STARLAN
CP auto-answers the call and provides a second dialing prompt for completing the call to a
STARLAN NETWORK address. Depending on user’s data terminal type, the STARLAN CP
automatically selects the operating mode and enables the user to access and exchange data
over the network as described below.
Procedures for setting up connections (calls) between STARLAN NETWORK devices and
devices connected to System 25 vary, depending on both calling and called device. Generally,
a two-stage dialing procedure is used.
The scenarios described below cover most situations.
Calls from System 25 to the STARLAN NETWORK
A. An MS-DOS PC connected to System 25 uses the STARLAN NETWORK ACCESS
software to run STARLAN NETWORK applications.
The PC may be connected either to a System 25 DLC port or to an analog station or
trunk port. (The latter arrangement uses System 25’s Modem Pooling feature. )
A typical call is as follows:
1. The PC user loads ACCESS and is automatically connected to the STARLAN
NETWORK. (The STARLAN CP phone number may be entered when
ACCESS is installed.)
2. The PC user may now access the STARLAN NETWORK just as if he/she were
a client connected to the STARLAN NETWORK through an NAU.
Note: Applications that are to be run frequently or are large (>10K
bytes) should be copied to the user’s disk before they are run.
B. A Data terminal user accesses a UNIX system host on the STARLAN NETWORK.
When the user dials the STARLAN CP, the CP answers in Gateway Mode and presents
the user with a “STARLAN Address” prompt.
A typical call is as follows:
1. The user dials the STARLAN CP.
2. The STARLAN CP provides the address prompt. The user enters the logical
name of the STARLAN NETWORK host (for example, 3B2).
3. The user is connected to the UNIX system host and receives the host login
prompt.
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