Reserving Jacks For Computer Access And Modem Pools - AT&T Merlin II Feature Module 2 Data Communications Manual

Reserving Jacks for Computer Access and Modem Pools

Local Host Computer Access
2-14 Reserving Jacks for Computer Access and Modem Pools
2-14 Reserving Jacks for Computer Access and Modem Pools
If you want your system to have local host computer access or incoming or
outgoing modem pools, you need to reserve station jacks for these data
options.
Local host computer access is a method of connecting digital station jacks on
the MERLIN II system control unit to the EIA RS-232-C ports of an on-site
computer. This connection is made through Modular Processor Data Modules
(MPDMs). MPDMs convert the digital data signals sent through the control
unit to EIA RS-232-C data signals that the computer can receive, and vice
versa.
Users access the computer by placing a data call to a station jack that you've
designated for local host computer access. If you have as many computer
access station jacks as users or if people need to be sure of having access to
the computer at any time, you can give each person a different station
number to call. However, if many people share a computer, you may prefer
to assign some or all of the station jacks to a data hunt group with a single
access number (see "Planning Data Hunt Groups" ).
reserve jacks on digital station modules at the control unit for local host
To
computer access, follow these steps:
1 Determine the total number of station jacks you're going to use for
access to a bcal host computer. Keep in mind that you need an
MPDM for each jack.
2 On the "Station section of the Master Planning Form, locate that
Jacks"
nurnber of available digital station jacks.
3 In the "Person, Location, or Function" column for each jack number,
write "LHCA - MPDM" (for local host computer access using a Modular Processor Data Module).