Connecting A Personal Computer For Remote Programming - Comdial DSU II System Manual

IMI66–132
2.12.3 Connecting A Personal Computer
For Remote Programming
You can connect a personal computer (PC) to the DSU II digital telephone system remotely
through modems as described below. (For information on direct connection, refer to Section
2.12.1. )
You will need the following customer-supplied equipment:
• PC and appropriate software program,
• Pair of data modems.
The data modems must be: "Hayes-compatible," capable of 300-, 1200-, 2400-, or 9600-baud
data speeds, and have auto-answer capability. Be sure to verify the auto-answer capability before
purchasing the units. You are assured of best results if you employ modems of the same make
and model at both the installation site and the remote programming site.
Make the equipment connections per the following procedure:
1. Determine the signal needs of the modem from the user's manual for it. (The digital
telephone system only requires TD, RD, and SG but the modems may require more signals.
Check with the modem manufacturer for special requirements).
2. Wire the proper connector (to match the data jack) on one end of a length of multiline cable.
3. Punch down the appropriate leads on the connector block.
4. Connect the network jack of the data modem to an outside telephone line. (If a line is not
reserved for remote programming, have a line switch installed so that on site personnel can
switch the outside telephone line between the data modem and the digital telephone system
cabinet when you are going to perform remote programming.)
5. Refer to the user's manual for the modem, and program the modem to automatically answer
after the first ring.
6. Interface the PC with the modem at the programming site per the user's manuals for the
equipment be used.
7. Establish a communications link for programming the system from a remote site.
• If you have had a line switch installed at the customer site, call someone there and ask them
to set it for modem operation.
• After the outside line is connected to the modem, make the data link between the
originating and the remote modems, and perform programming from your remote site just
as if the PC was connected directly to the system.
2 – 38 Installing The DSU II Digital Telephone System
DSU II Digital Telephone System