User manual

Section 2

INSTALLATION

2-7

The called modem will turn on the ring indicator with each incoming ring (Pin 22). It will

usually output the word "RING" to the terminal with each incoming ring unless this feature

has been disabled with the ATQ or ATV commands.

The DPX-213 can be configured so it will:

•

Answer at a particular ring count (typically, the answering modem will be set

to answer on the first or second ring;

•

Never answer;

•

Answer if the data terminal ready lead (Pin 20) is asserted.

2.10 Trouble Shooting

If you are sure you have the correct cables, terminal speed and ASCII character format, but

are unable to get the OK response from typing AT, the DPX-213 may have an invalid set-

up string stored in the NVRAM.

A Master Reset should eliminate this problem. A Master Reset will erase all stored

numbers, passwords and configuration information. To initiate the Master Reset, turn the

DPX-213 power off, remove the lid and short the reset pads on the PCB while turning the

power back on. Wait a few seconds before removing the short

Now type

atK

as before. If you still experience problems, consult Section 7 on

Testing and Diagnostics or call your modem supplier for assistance. Details of the

Warranty and Service contacts are given in Section 10.