Multitech BA-Series Guida Utente Scaricare il pdf (Pagina 56)

Chapter 5 - Command Mode

Multi-Tech Systems, Inc. MT2834BA/BL Series User Guide

Listing On-Line Diagnostics L8

The L8 command displays the current on-line CONNECT status of the modem. This display can be

printed and used as a modem status report or as diagnostic information (such as when calling Tech

Support). To activate this command first type +++AT<CR>(on-line escape command while

maintaining command mode), then type ATL8. What then displays on your monitor is your modem's

current on-line condition (e.g., Link Type, Line Speed, Serial Speed, Type of Error Correction/Data

Compression, Number of past Retrains, etc.).

Off Hook H

You can make the modem hang up (go On Hook). Entering ATH1<RETURN> brings the line Off

Hook, just as if you picked up the telephone set. You can hang up by entering ATH0 or ATH (the

default is 0 when no number is entered).

Escape Sequences- Entering Command Mode While Still On-Line +++AT<CR>

It is possible to cause the modem to enter Command mode after the modem has gone on-line with a

remote modem, without disconnecting the call. This is done by entering an Escape Code. The default

Escape Code used by the modem is three plus signs (+++) followed by the letters A and T, up to

sixty command characters (most typically “H”, to hang up), and a RETURN. The number of

command characters allowed after +++ AT<CR> , is defined by S-Register S34. S-Register S34

defaults to ten command characters.

When this is done, the modem escapes to Command Mode, executes the command (if any), and

then remain in Command mode. For example, to hang up the modem at the end of a call, enter

+++ATH and hit RETURN. There is no need to incorporate pauses before and after the plus signs,

as done in earlier modems.

BREAK AT<CR>

The modem provides an alternative Escape method, using a Break signal as the Escape Code. The

Break signal allows the start-stop DTE (data terminal equipment) to signal the modem without loss of

character transparency. With this method, a BREAK signal is used instead of the three plus signs.

The BREAK is followed by the letters A and T, up to 60 command characters, and RETURN. When

this is done, the modem executes that command, but remains in On-Line mode unless the command

was to hang up and/or reset the modem (an H or Z), in which case the modem would be in the

Command Mode after executing that command.

Escape Sequence Options - Entering Command Mode While On-Line %E

As mentioned, the default escape sequence setting is for the modem to respond to the +++ escape

method. Optional settings are for the modem to respond to the Break method, for the modem to

respond to either the +++ or the Break Methods, for the modem to ignore both methods and not

escape, for the modem to respond with no "OK" to +++, and for the modem to respond with "OK" to

+++. The %E command is used to select these options, as follows:

%E0 = Modem Won’t Escape

%E1 = +++ AT<CR> Method (default)

%E2 = Break Method

%E3 = Either +++ or Break Methods

%E4* = No "OK" Response to +++

%E5* = "OK" Response to +++

* The %E4 and %E5 commands enable or disable an "OK" response, which is required by some

software packages during an escape sequence.

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Television

Contents

Installation

Location

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ProgrammeOedit

Programme

Pressing

Sharpness

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AutoOsleep

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Troubleshooting

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