Multitech MultiModem MT5634ZBA-V-V92 Guía de usuario descargar pdf (Pagina 15)

Chapter 3 – Operation

Multi-Tech Systems, Inc. MT5634ZBA-Series User Guide (S000286H) 15

Leased-Line Operation

The MultiModem ZBA modem can be used on a two-wire leased line.

A leased line is a private, permanent telephone connection between two points. Unlike normal dialup connections, a leased

line is always active. The modems automatically connect when they are attached to the line and are turned on. Because a

leased line is always active, one of the two modems on the line must be configured as the originate modem and the other as

the answer modem; however, it does not matter which is which.

In the event of an interruption, leased-line modems automatically reconnect when the data line or power is restored.

Setup

1. Open the modem and change jumper J10 to select leased-line operation, and jumper J11 to select either originate or

answer operation, depending upon how you intend to use the modem. Refer to Chapter 2, Step 1: Change the Internal

Jumpers, for the detailed procedure.

2. Connect a modular telephone cable to the LINE jack. Connect the other end of the cable to a two-wire lease-line jack or

terminals supplied by the telephone company.

3. Turn on the modem.

V.92 Operation

This section describes the status of the V.92 features in the initial release. Please note that the V.92 special features require

connection to a V.92-capable server.

• General. The V.92 protocol is enabled by default. The AT command that controls this is +MS=.

• Commands. AT commands specific to the V.92 protocol and the new V.44 compression protocol begin with the plus

character (+). These commands are in this manual. Also, the S109 register has been modified to support V.92.

• PCM Upstream. PCM Upstream is disabled by default. To upload files at speeds above 33.6 kbps, you must enable

PCM Upstream using the command +PIG=1. Please note that this requires connection to a V.92-capable server.

Also, please note that since speeds are affected by line conditions, meeting the previous requirements cannot

guarantee speeds above 33.6 kbps.

• Quick Connect. Quick Connect, which shortens the handshake time with another V.92 modem, is disabled by

default. To enable it, use the command +PQC=0. Quick Connect speeds connect times by skipping the line test

during the handshake and using the configuration from the last data connection. Quick Connect works best when line

conditions are consistent from call to call. If line conditions are variable, enabling Quick Connect can actually

increase the connect time slightly.

Connecting to the Internet

Your Multi-Tech modem is your gateway to the Internet and the World Wide Web. To access the Internet and Web via your

modem, you must establish a dial-up account with an Internet service provider (ISP). To locate an ISP near you, look in a local

directory or computer publication. Your ISP should provide you with the following information:

● User name (also called user ID)

● Password

● Access number (the number you call to connect to the server)

● Host name and/or domain name

● Domain Name Server (DNS) server address

If, besides the Web, you use the Internet for e-mail and newsgroups, your ISP should also provide you with the following

information:

● POP server address

● SMTP address

● News or NNT server address

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