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Introduction
Welcome to the Global Carrier 56 User Guide, a comprehensive guide to the efficient use of your
modem. Together with the Read Me First Guide supplied with your modem, this reference
manual provides all the information needed to make maximum use of your equipment and
software. The Global Carrier 56 User Guide is divided into the following sections:
Getting Started
❏A complete description about how to get started using your equipment, including basic
details and more advanced topics.
Error Correction
❏Examines and explains the error correction features, includingV.42bis data
compression, of your equipment.
Security
❏Examines and explains the data security and encryption features of your equipment.
Synchronous Modes
❏Full details on how to use your modem for synchronous operations.
Dumb Mode
❏Provides product specified information on Dumb Mode operation.
V.25bis Operations
❏Describes how your modem implements V.25bis and how it interacts with AT
commands.
Distinctive Ring
❏Explains how to use Distinctive Ring and its associated commands.
Caller Id
❏Explains how to use Caller Id and its associated commands.
AT Commands
❏Provides a complete description of all commands available in your modem.
S Registers
❏Introduces you to S Registers and how to use them.
❏Contains a description of the available S Registers.
Response Codes
❏This section provides information on the response codes supported by your modem.
RS-232 Signals
❏This section provides information on signals supported on the modem’s RS- 232
socket.
Abbreviated Command Listing
❏This section provides a quick reference of the commands for the Global Carrier 56.
Glossary of Communications Terms
❏Provides descriptions of modem, facsimile and other communications terms.