Connecting Data Equipment

The physical connections for both digital-to-analog and analog-to-digital pairs are the same. It is the option settings on the modem and data module and the system programming (done in SPM) that distinguish one type of modem pool from another.

NOTE:

Since an MLX telephone is not part of the 440A4 terminating resistor to connect the jack in every modem pool configuration.

configuration, you must use a data module to the MLX station

Data Hunt Groups

In a digital-to-analog modem pool, the data modules are assigned to a data hunt group, which is an extension that is dedicated to a modem pool. When a call reaches the dialed data hunt group, the call is directed to the first idle data module in the pool.

Similarly, in an analog-to-digital modem pool, the modems are assigned to a data hunt group.

Inside and Outside Data Calls

To setup modem pools that handle calls both within the system and outside, you will use a basic station jack on an 012 or 008 OPT module to connect each modem to the control unit. Each data module connects to an MLX station jack on an 008 MLX or 408 GS/LS-MLX module. See Figure 6-8and follow the detailed procedures in this section.

Outside Data Calls Only

To setup modem pools that handle only the calls that are transmitted over outside trunks, you will use an MLX station jack on an 008 MLX or a

408 GS/LS-MLX module to connect each data module to the control unit. The modems connect directly to the network interface, not the control unit.

See Figure 6-8and follow the detailed procedures in this section.

6-24Modem Pools

Page 267
Image 267
AT&T Release 2.0 manual Data Hunt Groups, Inside and Outside Data Calls, Outside Data Calls Only