ND-20292
CHAPTER 9
APRIL, 1990
Attendant intervention with a system supported by a
CPU-EBB (or higher) ETU.
To prevent an accidental disconnection, it is
recommended to assign the following system data.
NOTE:
In this application, the
modem
connected to
the RAA-E Unit must have auto answer
capability.
MEMORY BLOCK 3B-4 RAA SLT ASSIGNMENT
(CPU-EB3 ETU required)
This Memory Block is used to avoid accidental
disconnections between the RA&E unit and the
associated programming ETUs (ESI, SLI, VMI, CO1 or
TLI) when remote or local programming/ maintenance
is being performed. See Figure 910-l.
This program inhibits disruption of the RAA-E Unit
programming connection when any of the following
changes are attempted for slots, ports or ETUs
Involved:
MEMORY
BLOCK
3D3
3D4
4A2
4C2
lE3
lE3
Table 920
FUNCTION
Forced Slot
Initialization
Forced Terminal
Initialization
System All Busy
Out Assignment
Interface Slot
Busy Out
Assignment
Terminal Busy
Out Assignment
Port Busy Out RAA-E Unit, SLI ( ),
Assignment VMI, CO1 (TLI)
SLI-I ( ),ESI- ( 1,
VMI, COI-( ),
RAA-E Unit
SLI-I( ), VMI,
COI-( ), TLI-( ), ESI-
0
%.,I-( 1, VMI,
COI-( ),TLI-( ),
ESI-( 1
R&&E Unit, SLI ( 1,
VMI Extensions
The following program changes will disconnect the
RAA-E connection when applied to the the equipment
involved.
The following steps should be considered when
connecting the modem to a line.
MEMORY
BLOCK
Table 920-4
FUNCTION
I
4Cl
1
Card Interface Slot Assignment
1
I
lE2
I
Terminal Add Port
I
2.
setting of the modem matches that of the RAA-E
Unit, and that the modem is set for auto answer.
If a dedicated Central Office (CO) line is being
used, connect the CO line to the modem as
described in the instruction manual provided by
the modem manufacturer. If a single line port
position is used, connect the modem to the single
line port as if it were an SLT, following the
instructions provided by the modem manufacturer.
If a line is not already available, it may be
necessary to run a cable and connect a modular
jack to a single line port of the system’s MDF.
920.6
GROUNDING the RAA-E and MODEM
The RM-E Unit and the modem connected to it, must
be grounded to the same earth ground point. In order
to effectively ground the RAA-E Unit, a spade lug
connected to an 18 AWG grounded wire should be
fastened underneath the screw on the back (RS-232C
side) of the RAA-E Unit. (See Figure 920-l.)
920.7
MODEM to MODEM CONNECTION
Depending upon
the type of modems and computers
used, the procedures used to make the end to end
modem connections will vary. Refer to the modem’s
and computer’s instruction manual to determine the
proper procedure for end to end connection. Things to
take into account are manual or auto-dial capabilities
and manual or auto-answer capabilities. It should also
be noted that the ADMI.DO File is a stand alone Host
program and does not contain a Communications
Application program, therefore, Request To Send
CRTS) and Data Terminal Ready (DTR) will not be ON
at the PC Communications Port (COM PORT) when
the file is executed.

SECTION 930

PC8300 and PC-8231A INSTALLATION

Refer to Chapter 7, Sections 740 and 750.5.
1.
Ensure that all switches are properly set in the
modem. Take special care that the baud rate
900-6