Epson ESC/VP21 User manual

FAX/DATA MODEM
USER’S MANUAL

Notice:
Hayes is a trademark of Microcomputer Products Inc.
Publication Number : ASK9406

Table of Contents
FCC/DOC REQUIREMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . .
i
FCC General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . i
FCC Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . i
DOC Notice . . . . . . . . . . . . . . . . . . . . . . . . ..III
INTRODUCTION
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1
COMMAND REFERENCE
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3
General Command information . . . . . . . . . . . . . . . . . . . . . . ...4
AT Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...4
Commands Preceded by & . . . . . . . . . . . . . . . . . . . . . 11
Commands Preceded by \ . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Commands Preceded by % . . . . . . . . . . . . . . . . . ...23
Commands Preceded by-and ” . . . . . . . . . . . . . . . . ...25
Dial Modifers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Time Independent Escape Sequence (TIES) . . . . . . . . . . . ...29
Result Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..31
S REGISTER REFERENCE
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
35
Register Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Glossary of the S Registers . . . . . . . . . . . . . . . . . . . 38

TESTING
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
53
Local Analog Loopback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Local Analog Loopback with Self-Test . . .. . . . . . . . . . . . . 56
Remote Digital Loopback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Remote Digital Loopback with Self-Test . . .. . . . . . . . . . . 59
Local Digital Loopback . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . 60
Grant or Deny RDL Request from Remote Modem . . . . . 62
TROUBLESHOOTING GUIDE
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
63
APPLICATION EXAMPLES . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . .
67
Dialing a Remote Modem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Dial a Stored Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Manual Answer an Incoming Call . . .. . . . . . . . . . . . . . . 68
Auto Answer an Incoming Call . . . . . . . . . . . . . . . . . . . . . . . . . 68
Voice to Data Switching . . . . . . . . . . . . . . . . . . . . . . . . 69
TECHNICAL SPECIFICATIONS
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
71
Features . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
QUICK REFERENCE
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
75
ASCII CODE TABLE
. . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
79

i - FCC/DOC REQUIREMENTS
i.1 FCC General Information
The Federal Communications Commission (FCC) of the United States restricts
specific uses of modems, and places registration responsibilities on both the manu-
facturer and the individual user:
1.
2.
3.
i.2
The modem may not be connected to a party line or to a coin operated tele-
phone,
The modem manufacturer must make any repairs to the modem to maintain
valid FCC registration.
Notification to the telephone company is no longer required prior to connect-
ing registered equipment, but upon request from the telephone company, the
user shall tell the telephone company which line the equipment is connected
to as well as the registration number and ringer equivalence number of the
registered protective circuitry FCC information is printed on a label on the
bottom of the modem.
FCC Notice
This equipment has been tested and found to comply with the limits for a digital de-
vice, pursuant to Subpart B of Part 15 of the FCC rules. These limits are designed
to provide reasonable protection against harmful interference in a residential instal-
lation. This equipment generates and uses radio frequency energy and if not in-
i - FCC/DOC REQUIREMENTS
I

stalled and used the instructions. may cause interference to radio communications.
However, there is no guarantee that interference will not occur in a particular instal-
lation, If this equipment does cause harmful interference to radio or television
reception, which can be determined by turning the equipment off and on, the user
is encouraged to try and correct the interference by one or more of the following
measures:
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
Connect the equipment into an outlet on a curcuit different from that to
which the receiver is connected.
Consult the dealer or an experienced radio/TV technician for help.
Shielded interconnect cables and a shielded power cord must be employed with
this equipment to insure compliance with the pertinent RF emission limits
governing this device. Changes or modifications not expressly approved by the
manufacturer could void the user’s authority to operate this equipment.
NOTE : The manufacturer is not responsible for any radio or T.V. in-
terference caused by unauthorized modifications to this eq-
uipment. Such modifications could void the user’s authority
to operate the equipment.
ii
FCC/DOC REQUIREMENTS - i

i.3 DOC Notice
Notice: The Canadian Department of Communications label identifies certified
equipment. This certification means that the equipment meets certain telecommuni-
cations network protective, operational and safety requirements. The Department
does not guarantee the equipment will operate to the user’s satisfaction.
Before installing this equipment, users should ensure that it is permissible to be
connected to the facilities of the local telecommunications company. The equip-
ment must also be installed using an acceptable method of connection, In some
cases, the company’s inside wiring associated with a single line individual service
may be extended by means of a certified connector assembly (telephone extension
cord). The customer should be aware that compliance with the above conditions
may not prevent degradation of service in some situations.
Repairs to certified equipment should be made by an authorized Canadian mainte-
nance facility designated by the supplier. Any repairs or alterations made by the
user to this equipment, or equipment malfunctions. may give the telecommunica-
tions company cause to request the user to disconnect the equipment.
Users should ensure for their own protection that the electrical ground connections
of the power utility, telephone lines and internal metallic water pipe System if pre-
sent, are connected together. This precaution may be particularly important in rural
areas,
i - FCC/DOC REQUIREMENTS
Ill

Caution: Users should not attempt to make such connections themselves, but
should contact the appropriate electric inspection authority. or electrician, as appro-
priate.
The Load Number (LN) assigned to each terminal device denotes the percentage
or the total load to be connected to a telephone loop which is used by the device, to
prevent overloading. The termination on a loop may” consist of any combination of
devices subject only to the requirement that the total of the Load Numbers of all the
devices does not exceed 100.
iv
FCC/DOC REQUIREMENTS - i

1- INTRODUCTION
Congratulations on your purchase of this outstanding Fax/Data Modem. This man-
ual describes how to operate your new Fax/Data Modem.
Instructions for installing your Fax/Data Modem will be found in the Installation
Manual, while the information in this manual, deals exclusively with the operation
of the modem
after it is installed, such as the command set, the internal configura-
tion registers, troubleshooting and testing.
Features :
These Fax/Data Modems combine the features of a 14400 bps data modem and a
14400 bps FAX modem. Your new Fax/Data Modem gives your personal compu-
ter the ability to send and receive FAX messages over the telephone line like a
standard FAX machine. Your Fax/Data Modem also allows your PC to communi-
cate with other personal computers, terminals or BBS’s (Bulletin Board Systems)
through the data modem functions,
When used as a data modem your Fax/Data Modem uses the standard AT command
set and is fully compatible with CCITT V.42, V.42bis, V.32bis, V.32, V.22bis,
V.22, V.21, MNP 2-5, Bell 103 and 212A. When used as a Fax/Data Modem it
communicates with all CCITT Group 3 FAX machines and is compatible with
CCIIT V.27ter and V.29, V 17, T.4 and T,30. Switching between DATA mode op-
eration and FAX mode operation of your Fax/Data Modem is done through its
firmware, no hardware settings are required.
1- INTRODUCTION 1

If you are already familiar with the use of a modem and the Hayes AT command
set, this modem will be extremely easy for you to use. Just read the installation pro-
cedures in the installation manual and you are ready to begin operation. If you are
new to modem communications, we recommend that you read through this manual
first. If you come across terms that you don’t understand. consult the glossary.
Words in
boldface type are command names, commands. or default settings. Car-
nage returns (Enter) are noted with <CR> or [ENTER]; this does not mean to enter
these characters literally; but instead to press the Enter key.
This manual is written to be used for several models of Fax/Data Modems. Some
of the information in this manual may not apply to your fax/data modem.
2
INTRODUCTION -1