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Other Call Establishment Methods
In addition to the configuration and operation methods in this chapter, the modem
supports other methods to establish and manage telephone connections:
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These methods are described in the sections that follow.
V.25bis ACU for Sync or Async Applications
The modem supports an ITU-TS V.25bis ACU for initiating calls from an intelligent
terminal, in synchronous or asynchronous formats, which supports:
For more information on the V.25bis ACU, refer to Chapter 3, Automatic Calling
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Interfaces, in the 326X Series Modem Reference Guide. Programmers and System
Developers should also refer to Chapter 3 for a programming guide describing
asynchronous and synchronous data formats using the ASCII/EBCDIC character
sets.
NetView LPDA-2 ACU for Sync Applications
The modem supports Link Problem Determination Aid (LPDA-2). LPDA-2 is the
communications protocol between IBM host software and transmission devices for
exchanging diagnostic and control information. LPDA-2 commands provide a means
for an attached terminal to command the modem to dial a telephone number and
report back if the call is successful or not successful.
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For more information on using the LPDA-2 ACU, refer to Chapter 3, Automatic
Calling Interfaces, in the 326X Series Modem Reference Guide for configuration
information and for information on NetView's LPDA-2 dialing commands.
3-10 Getting Started
• V.25bis ACU (for synchronous or asynchronous applications)
• NetView LPDA-2 ACU (for synchronous applications)
• IBM AS 400 (for synchronous dialing)
• External Auto-Call Units such as the Bell 801C
• Addressed mode, to perform call-related tasks, such as storing phone numbers
in memory, dialing calls from memory, connecting/disregarding incoming calls
• Manual and direct call establishment methods. Direct mode lets you use DTR
transitions from the DTE to establish calls. Manual mode lets you manually
initiate and answer calls with a telephone and then transfer the call to the
modem.
Where Do I Go from Here?
Where Do I Go from Here?
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