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OPERATION
MODEM
APPLICATION
PMC-100
APPLICATION
3-6
provide this access. Once the Supervisory terminal is communicating
with the CSU, its operation is the same regardless of the means used to
connect to it. That is, the Supervisory terminal appears to be connected di-
rectly to the CSU. The following paragraphs describe the procedures used
to access the CSU.
A typical application providing remote access is illustrated in Figure 1-2.
To access a CSU, place a normal data call from the terminal location to
the desired CSU location. After the data connection is made, use the ter-
minal as you would when it is connected directly (described below). If
you placed the call using the terminal, be sure to place the modem in data
mode.
PMC-100s provide enhanced network control and allow one Supervisory
terminal to be easily shared among all CSUs in the network, as shown in
Figures 1-3 through 1-5. Each CSU has a unique identification, or address,
that is assigned during CSU configuration. (One PMC-100 is configured
as the master and it is the one through which you access any CSU in the
network.) To access a CSU once the Supervisory terminal is connected to
the master PMC-100 (either directly or via modems) and the PERFOR-
MANCE MONITOR menu is displayed:
1. Press N to select the NETWORK ELEMENT ACCESS screen.
2. Enter the three-digit address (000 to 255) of the desired CSU, then press
the RETURN (↵) key. This address is sent to all CSUs, but only the
one assigned this address responds. If the CSU does not respond, the
terminal displays the message No Response at the bottom of the
screen. If you entered an incorrect address, the terminal displays the
message Invalid Address at the bottom of the screen. Enter the cor-
rect address.
3. The Supervisory terminal is communicating with the CSU, and the
CSU displays the log-on screen and its address (at the bottom of the
screen). Use the terminal as you would when it is connected directly
(described below).
To access the master PMC-100 from a CSU, at any time, press the control
key and the P key (for PMC-100) simultaneously. This is abbreviated as
<Ctl>P.
You can also use the following at any time as an alternative method to
access a CSU:
1. Press the control key and the A key (for address)
This is abbreviated as <Ctl>A.
2. The terminal displays the message Enter Address at the bottom of the
screen. Enter the address of the desired CSU, then press RETURN.
3. The Supervisory terminal is communicating with the CSU.
simultaneously.
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