Black Box MD885A-R4 Manuel utilisateur

Secure sync or async dial-in access

to your data center.

Secure sync or async dial-in access

to your data center.

Modem 34336

FREE 24-hour Tech Support: 724-746-5500

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2 of 3

FEATURES

• Front-panel programmable.

• Sync or async operation.

• Multiple levels of network security

ensures safe transmission of sensitive

data such as financial information.

• Digital Signal Processing technology

enables 33.6-kbps speeds for sync

traffic, 230.4-kbps speeds for async

traffic, and 14.4-kbps speeds for fax

transmissions.

• Automatically falls back to slower

modem speeds if necessary.

• Automatic dial backup.

• Supports V.42 bis and MNP 5.

• V.54 diagnostics.

The Modem 34336’s connections.

OVERVIEW

The Modem 34336 has the reliable performance, the top-

flight security, and the wide range of features to make it ideal

for secure data-center installations. Best of all, it’s easily pro-

grammable from the front panel, so its features are readily

accessible.

Secure.

This modem’s multiple levels of security are tailored for

data centers that receive highly-sensitive data. It’s particularly

well suited for financial institutions that handle large

amounts of private data such as account information and

social security numbers.

The modem can be programmed for manual password

protection (MPP) in which the connecting user manually

types in a password. The modem can be set to connect the

user immediately or, for an extra layer of protection, hang

up and call back at a pre-determined number.

Automatic password protection (APP) incorporates the

password as part of the modem training process and is trans-

parent to the user. APP can also be set to call back.

Flexible.

The Modem 34336 operates over the Public Switched

Telephone Network (PSTN) and over 2- or 4-wire

unconditioned leased lines.

Although it handles sync speeds of up to 33.6 kbps and

async speeds of up to 230.4 kbps, the Modem 34336 can easily

communicate with slower modems. It automatically falls back

to slower modes including V.32 terbo, V.32 bis, V.23, V.22, V.22

bis, V.21, or Bell 212A.

Compatible.

The modem supports V.13, so it works with systems con-

figured for half-duplex modems. A V.29 Fast Train (FT) mode

works in multidrop network configurations.

The V.25 bis autodialer complies with both async and sync

international serial call origination standards.

AT emulation mode enables the modem to communicate

with a device running intelligent communications software

designed to drive an AT style autodial modem. For error

correction and data compression, the modem supports V.42

bis and MNP®Class 5 in both dialup and leased-line

operations.

DTE DIAG

DIAL

LEASED

LINE PHONE

POWER

DTE

RS-232

cable

4/4/2007

#16005

724-746-5500 blackbox.com

DTE AC

outlet

Dialup line Leased line TelephonePower

trans-

former

3 of 3

TECH SPECS

Alternate Fallback Capability — V.23, V.22, V.21

Fax Standards — V.29, V.27 terbo, V.21 Channel 2 T.30, V.17

Operation — 2-wire: Full duplex, dialup or leased lines;

4-wire: Full duplex, leased lines

Speed (Maximum) —

Sync: 33.6 kbps;

Async: 230.4 kbps;

Fax: 14.4 kbps

Standards — ITU: V.34, V.33, V.32 bis, V.32, V.29 Fast Train, V.22 bis;

Bell: 212A, 208 A/B, 103

Connectors — (1) DB25 F, (2) RJ-11, (2) RJ-45, (1) 5-pin DIN

Power — 115 VAC, 60 Hz (230-VAC version on request)

Size — 2.5"H x 9.7"W x 10.7"D (6.4 x 24.6 x 27.2 cm)

Weight — 4 lb. (1.8 kg)

4/4/2007

#16005

724-746-5500 blackbox.com

Item Code

Modem 34336 MD885A-R4

• In leased-line applications, the Modem 34336 monitors

received carrier level and signal quality.

If performance drops below selected thresholds, the

local modem automatically establishes a dial connection

to the remote modem. Thanks to automatic loopback,

the communication path returns to the leased line when

conditions improve.

• In dialup applications, the Modem 34336 can be pro-

grammed to redial the remote modem automatically.

This is particularly helpful if the dialup line connection

is lost.

• The automatic password protection (APP) feature gives

you transparent security support by incorporating the

password as part of the modem training process. You can

also program the modem to call back the originator during

the APP security process.

• The Modem 34336 supports Analog Loopback (Loop 3),

Analog Loopback Selftest, Analog Loopback Selftest with

Errors, Remote Digital Loopback (Loop 2), and Remote

Digital Loopback Selftest.

Technically Speaking

Fax, too.

As a fax, the Modem 34336 is compatible with Group III,

Class 1 and Class 2 Fax. It supports multiple modulation stan-

dards and speeds for a variety of fax transmissions, including

V.17 at 14.4 and 12 kbps, and 9600 and 7200 bps; V.29 at 9600

and 7200 bps; and more.

Automatic dial backup.

For leased-line applications, the Modem 34336 supports

automatic dial backup. The modem monitors carrier level

and signal quality and, if performance drops below selected

thresholds, automatically establishes a dialup PSTN connec-

tion. Automatic lookback returns the connection to the

leased line when the link is restored.

Front-panel configuration.

Configure the modem using the 2 x 20 character LCD and

six front-panel buttons. You can also use AT commands to

control configuration parameters through the DTE interface.

Diagnostics.

Last but not least, the modem includes V.54 diagnostics

to quickly isolate problems and increase uptime. Test the

modem from the front panel or through the DTE interface.

The modem supports Analog Loopback (Loop 3), Analog

Loopback Selftest, Analog Loopback Selftest with Errors,

Remote Digital Loopback (Loop 2), and Remote Digital

Loopback Selftest. Use the LED display to monitor the DTE

interface as well as transmit and receive on the phone line.

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