Multi-Tech Systems DT101/xx, DT102/xx Configuration 1 - Dial-Up Link, Home Office

Chapter 2 - Configuration

2.2 Configuration 1 - Dial-Up Link

Configuration 1 is a dial-up link using a pair of DataTalkers to provide data communications between a home office PC and the main office host computer and telephone services through the main office telephone system. The data and telephone services are provided using a single line between the home office and the main office. In this application, the main office DataTalker is tied to a host computer via an async channel, and the data channel of the home office DataTalker is connected to the serial port of the home office PC. The composite link is provided by internal 33.6K modems in a dial-up configuration. All of the telephone services of the main office are supplied to the home office as if the home office was directly connected to the main office telephone system.

PSTN

Asynchronous

Channel

Composite Link	Asynchronous
	Channel
PSTN

Voice/Fax	DataTalker
Channel
	DataTalker	PC
Trunk	Voice/Fax
Trunk
	Channel
Trunk
Station		Telephone
Station	Telephone

PBX

Home Office

Figure 2-1 Dial-Up Link

To set up this configuration, connect the main office DataTalker to the host computer, to the in- office telephone system (PBX), and to the public switched telephone network (PSTN). Connect the home office DataTalker to the serial port of your PC, to a telephone set, and to your local telephone line. You must also connect a terminal or a PC running communications software (such as Multi-Tech’s MultiExpress™ for DOS) to the dual function data/command port and configure the DataTalkers. Configure the DataTalker for the main office application; i.e., set up the voice/fax channel for a local interface of FXO and a remote interface of FXS. Configure the home office unit for DTR dialing of the main office DataTalker, a local interface of FXS, and a remote interface of FXO.

You must configure the DataTalkers before you connect them to the computers. To configure a DataTalker, place DIP switch position 3 in the down (closed) position and connect a command port device such as a terminal or a PC to the DATA/COMMAND connector on the back of the DataTalker. Turn on the DataTalker and PC and run your communications software in terminal mode. (Set it for direct connection at a serial port speed of 19,200 bps or slower.) Press the ENTER key to establish communications with DataTalker and see the Main Menu.

A series of configuration menus provides simple and complete configuration information for each aspect of the DataTalker. Using the menus, we will configure one DataTalker for the main office and the second one for the home office.

The menus flow from the Main Menu through the Configurations menu to configuration menus for specific parts of the DataTalker. From the Configurations menu you will use the first menu to configure the data port of the main office unit to talk to the host computer, and that of the home office unit to talk to the async channel of the home office PC. You will use the next one to configure the voice/fax channel for connection of the main office DataTalker to an extension of the local PBX, and the home office DataTalker to your telephone and your local telephone service. You will use the final group of configuration menus to set up the internal MMH2834 modem to dial the main office from the home office and for the main office to answer the call.

As you go through these configuration menus, you must supply the specifics of your configuration.

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