0049-1800-xxx 326X V.34, V.34-SDC and V.32bis Series Modem – USER’S GUIDE 02/23/2010
Rev. A
Page 13
of
205
LPDA
2
ACU
The LPDA2 feature lets you use IBM dial and leased line restoral applications with LPDA2 Dial and
Disconnect commands. LPDA2 allows Netview and other IBM applications, like POS outbound dialing
applications, to control dialing.
In dial applications, LPDA2 eliminates the need for additional ports and equipment that had been required
to support external 801 auto-dialing equipment in IBM environments.
In leased line operation, while connected on the dial line, the modem can monitor for LPDA2 commands in
the data stream. If the local modem detects an LPDA2 command, the frame that is being processed is
aborted. This prevents the remote DTE from processing the command frame as valid data.
Refer to Chapter 3, Automatic Calling Interfaces, in the
326X Series Modem Reference Guide
, for details.
MANAGING A MODEM
Integral Network Management by Raymar-Telenetics’ 9110, 9000-UX, and 9000-PC Network Management
Systems (NMS) is standard. The NMS can configure, monitor, and control local and remote modem operation.
An NMS continuously polls modems to collect management information and check status. Network
management traffic, including alarms, commands, events, and polling, is transported to remote modems on an
in-band channel that does not disrupt user data traffic nor consume user bandwidth. The modem supports a
daisy-chain network management interface, reducing the hardware required for connections.
Refer to Chapter 2, Installing the Modem, for instructions on installing and cabling a modem for use with
Raymar-Telenetics’ Network Management Systems.
RESTORING DATA TRANSMISSION
For critical leased line applications that require backup, you can use Models 3261, 3263, 3266, or 3268 in a
point-to-point configuration. If the leased line fails, these modems can automatically reroute data traffic
through the public switched telephone network (PSTN) over a 2-wire dial line. This integral dial line restoral
feature guarantees that data will keep flowing, minimizing network downtime.
ITU-T V.34 COMPLIANT MODULATION MODE
326X
FAST
and 326X
FAST
-SDC modems support the ITU-T V.34 compliant modulation mode. 326X
FAST
-
SDC modems offer the same broad set of features available in the 326X
FAST
modems,
and
let you take
Содержание 326X V.32bis Series
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