Black Box MD885A-R2 User manual

CUSTOMER
SUPPORT
INFORMATION
Order toll-free in the U.S.: Call 877-877-BBOX (outside U.S. call 724-746-5500)
FREE technical support 24 hours a day, 7 days a week: Call 724-746-5500 or fax [phone]
Mailing address: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018
Web site: www.blackbox.com • E-mail: [email protected]
AUGUST 1999
MD885A-R2
MD885A-R3
MD885AE-R2
MD885C-R2
Modem 34336
MODEM
34336
123ENT
123
601745301 Rev. A
NOTE
All models include the modem, (1) leased line cable, (1) dialup phone cable
and this user manual. The MD885A-R2, MD885AE-R2, and MD885A-R3
include a power supply. The MD885A-R3 also includes (1) 10-ft. RS-232
cable and (1) DB9 F to DB25 M adapter.

1
FCC Information
FEDERAL COMMUNICATIONS COMMISSION
AND
INDUSTRY CANADA
RADIO FREQUENCY INTERFERENCE STATEMENTS
This equipment generates, uses, and can radiate radio frequency energy and if not
installed and used properly, that is, in strict accordance with the manufacturer’s
instructions, may cause interference to radio communication. It has been tested
and found to comply with the limits for a Class A computing device in accordance
with the specifications in Subpart J of Part 15 of FCC rules, which are designed to
provide reasonable protection against such interference when the equipment is
operated in a commercial environment. Operation of this equipment in a
residential area is likely to cause interference, in which case the user at his own
expense will be required to take whatever measures may be necessary to correct
the interference.
Changes or modifications not expressly approved by the party responsible
for compliance could void the user’s authority to operate the equipment.
This digital apparatus does not exceed the Class A limits for radio noise emission from
digital apparatus set out in the Radio Interference Regulation of Industry Canada.
Le présent appareil numérique n’émet pas de bruits radioélectriques dépassant les limites
applicables aux appareils numériques de la classe A prescrites dans le Règlement sur le
brouillage radioélectrique publié par Industrie Canada.
TRADEMARKS USED IN THIS MANUAL
Hayes®is a registered trademark of Hayes Microcomputer Products, Inc.
Microcom Networking Protocol®and MNP®are registered trademarks of
Microcom Systems, Inc.
Any trademarks mentioned in this manual are acknowledged to be the property of the
trademark owners.

2
Modem 34336
Table of Contents
1.0 Specifications .....................................................................................6
2.0 Quick Start..........................................................................................8
2.1 Installation ..................................................................................8
2.1.1 Unpacking ................................................................................8
2.1.2 Package Contents......................................................................8
2.1.3 What You Will Need..................................................................8
2.1.4 Connections ..............................................................................8
2.1.5 Jumpers....................................................................................10
2.2 Front Panel LCD And Controls ..............................................11
2.2.1 Power-On Screen ...................................................................11
2.2.2 EIA Status Screen ...................................................................12
2.3 Quick Setup ..............................................................................13
2.4 Basic Operation .......................................................................16
2.4.1 2-Wire Dial (Hayes) Mode .....................................................16
2.4.2 2-Wire Dial (V.25 bis) Mode ..................................................18
2.4.3 2-Wire Dial (Dumb) Mode ....................................................19
2.4.4 Leased Line (2- or 4-Wire) Mode .........................................21
2.4.5 V.33 Leased Line Operation .................................................22
2.4.6 2-Wire Dial (Bell 208) Operation .........................................22
2.4.7 4-Wire Leased Line V.29 Mode ..............................................23
2.4.8 V.29 Fast Master and Slave Modes .........................................24
2.5 Problem Solving .......................................................................25
3.0 Modem Setup Options ..................................................................27
3.1 Methods For Selecting Options ..............................................27
3.2 Selecting Options From The Front Panel ..............................28
3.2.1 Pushbuttons And The LCD ...................................................28
3.2.2 How To Select Options...........................................................29
3.3 Options .....................................................................................32

3
Table of Contents
3.3.1 V.42 Error Correction Options .............................................35
3.3.2 Dialer Mode ...........................................................................41
3.3.3 Data Format Options .............................................................42
3.3.4 Disconnect Options ...............................................................43
3.3.5 Test Options ...........................................................................44
3.3.6 EIA Options ............................................................................44
3.3.7 Modem Setups .......................................................................46
3.3.8 V.33 and BELL 208A/B Options ..........................................49
3.3.9 Options Accessible With Summary Setup Only ...................50
4.0 General Operation and Special Features...................................54
4.1 Quick Reset ..............................................................................54
4.2 Phone Number Storage ...........................................................54
4.3 Leased Line Auto-Recovery .....................................................55
4.3.1 Autodial Backup .....................................................................57
4.3.2 Exit From Leased Line Auto-Recovery .................................57
4.3.3 Leased Line Auto-Recovery Options ....................................58
4.4 Dial Line Auto-Recovery ..........................................................58
4.4.1 Setting Up The Modem For Dial Line Auto-Recovery .........58
4.4.2 Recovery Procedure ...............................................................58
4.5 DTR Dialing .............................................................................60
4.5.1 Dialing A Stored Number ......................................................60
4.5.2 Answer Mode Operation .......................................................60
4.6 Dumb Mode And Bell 208 Operation ....................................60
4.7 Modem Security Operation .....................................................62
4.8 Modem-Controlled Remote Control .......................................66
4.8.1 Direct Modem-to-Modem Remote Control ..........................66
4.8.2 Remote Control through a Rack Controller.........................67
4.9 Diagnostic Interface Control ..................................................71
4.9.1 Diagnostic Port .......................................................................71
4.9.2 Diagnostic Port Commands ..................................................71
4.9.3 Responses To Diagnostic Port Commands ...........................73
4.9.4 DTE Displays ..........................................................................75
4.9.5 Disconnecting From A Diagnostic Link ...............................75

4
Modem 34336
4.10 Automatic Fallback ..................................................................76
4.10.1 Operating Mode Fallback ......................................................76
4.10.2 V.32 Speed Fallback ...............................................................78
4.11 V. 13 Operation ........................................................................80
5.0 Hayes Emulation Mode .................................................................81
5.1 Hayes Mode Autodialer ...........................................................81
5.1.1 Enabling The Hayes Mode Autodialer .................................81
5.1.2 Command Guidelines ............................................................81
5.1.3 Result Codes ...........................................................................84
5.1.4 Transmission Speed ...............................................................84
5.2 Hayes Compatible Commands ................................................84
5.3 S Registers ................................................................................90
5.3.1 Reading And Setting Registers ..............................................86
5.3.2 S Register Functions ..............................................................86
5.4 Selecting Options In Hayes Mode ..........................................94
5.4.1 Saving Option Selections .......................................................94
5.4.2 Profile 0 and Profile 1.............................................................94
5.5 Hayes Mode Reference Tables ................................................95
6.0 V.25 bis Autodialer .......................................................................107
6.1 Enabling The V.25 bis Autodialer .........................................107
6.2 V.25 bis Autodialer Commands ............................................108
6.3 Dialing Parameters ................................................................112
6.4 V.25 bis Result Codes .............................................................112
6.5 DTR Dialing In V.25 bis Mode ..............................................112
7.0 Diagnostics ......................................................................................113
7.1 When And Why To Test ........................................................113
7.2 Symptoms And Scope Of The Problem ...............................113
7.3 Physical Inspection ................................................................114
7.4 Overview Of Modem Diagnostics ..........................................114
7.5 How To Select And Activate Tests ........................................115
7.5.1 Front-Panel Control .............................................................115
7.5.2 Running Tests In Hayes Mode.............................................115
7.5.3 Remote Test Control ...........................................................115

5
Table of Conents
7.6 Diagnostic Monitoring: Status Screens .................................115
7.6.1 EIA Status Screen .................................................................115
7.6.2 Other Status Screens.............................................................116
7.7 Local Modem Diagnostics ......................................................118
7.7.1 Analog Loopback (ALB) Test .............................................118
7.7.2 Analog Loopback Self Test (ALBST) .................................119
7.7.3 Analog Loopback Self Test With Errors (ST/E) ...............120
7.7.4 External Analog Loopback (ALBX) Test ...........................121
7.7.5 External Analog Loopback Self Test (ALXST)...................123
7.7.6 Digital Loopback Test (DLB) .............................................124
7.8 Remote Modem Diagnostics......................................................126
7.8.1 Remote Digital Loopback (RDL) Test ...............................126
7.8.2 Remote Digital Loopback Self Test (RDLST) ....................127
Appendix A: DB25 Pin Assignments..........................................................129
Appendix B: Quick Setup Configurations .............................................130
Appendix C: Summary Setup .......................................................................135
Appendix D: Jumpers ......................................................................................144
Appendix E: LCD Flow Charts ....................................................................147

6
Modem 34336
1.0 Specifications
Available Configurations — Stand-alone or rack-mount
Compatibility — V.29 9600, 7200, 4800
V.32 terbo 19.2 or 16.8 kbps
V.33 14.4 or 12.0 kbps
V.32 bis 14.4, 12.0, 9.6, 7.2, or 4.8 kbps
V.32 9.6 or 4.8 Kbps
V.34+ 33.6, 31.2, 28.8, 26.4, 24, 21.6, 19.2,
16.8, 14.4, and 12 kbps, 9600, 7200,
4800, and 2400 bps
V.34 28.8, 26.4, 24, 21.6, 19.2, 16.8, 14.4,
and 12 Kbps, 9600, 7200, 4800, and
2400 bps
V.22 bis 2.4 kbps,
V.21 300 bps
Bell 208A/B 4.8 kbps
Bell 212A 1.2 kbps
Bell 103 0 to 300 bps
Data Rates — Asynchronous: 300 to 19,200 bps
Synchronous: 600 to 19,200 bps
Data Format — Asynchronous: 9, 10, or 11 bits, serial, binary
Synchronous: Serial, binary
Operation — Full duplex over dialup or leased line
Simulated half duplex V.13 operation
Fallback — Data Rates: 16.8, 14.4, 12.0, 9.6, 7.2, 4.8,
2.4, 1.2, or 0.3 kbps
Operation: V.22 bis, V.22, V.21, or V.23
Supported DTE Speeds — 300 to 115,200 bps
Modes — V.34+ 33.6, 31.2, 28.8, 26.4, 24, 21.6, 19.2, 16.8,
14.4, and 12 kbps, 9600, 7200, 4800, and
2400 bps; full duplex over 2-wire line
(Trellis coded)
V.34 QAM at 28.8, 26.4, 24, 21.6, 19.2, 16.8,
14.4, and 12 kbps, 9600, 7200, 4800, and
2400 bps; full duplex over 2-wire line
(Trellis coded)
V.34 Extended AT: 33.6 Kbps, TR-301 proposed
V.32 terbo QAM at 19.2 and 16.8 Kbps; V.32bis
fallback at 14.4 Kbps and lower
V.33 QAM Trellis coded at 14.4 and 12.0 Kbps
V.32 bis QAM at 14.4, 12.0, 9.6, 7.2, and 4.8
V.32 Kbps; echo cancel, full duplex over
2-wire line (Trellis coded at 7.2 Kbps and
higher, or non-coded at 9.6 Kbps)

7
1.0 Specifications
V.29 QAM at 9600, 7200, and 4800 bps
V.27 8-phase DPSK at 4800 and 2400 bps
V.26 4-phase DPSK at 2400 and 1200 bps
V.23 FSK at 1200/75 bps, full duplex
V.22 bis: QAM at 2400 bps; bandsplit, full duplex
V.22: DPSK at 1200 bps; bandsplit, full duplex
V.21: PSK at 0 to 300 bps; bandsplit, full duplex
Autodialer — Automatic dialing using rotary pulses or tone
signaling; supports Hayes AT commands or
V.25 bis commands
Answer Modes — Automatic and manual answer
Equalization — Receiver: Automatic adaptive equalization
Transmitter: Selectable compromise equalization
(4 types)
Line Requirement — Unconditioned
Transmit Timing — Internal, external, or slaved to receive clock
Transmit Level — Leased: Selectable, 0 to -15 dBm
Dial: Permissive or programmable
Interface — Terminal: RS-232C/D, CCITT V.24/V.28
Dialup Line: 8-pin RJ-45 modular connector with
A/A1 and MI/MIC control
Leased Line: 6-pin RJ-11 modular connector
Diagnostic: 8-pin RJ-45 modular connector
Carrier Detect Threshold — Leased line: -26, -33, or -43 dBm; selectable
Dial line: -34, 41, or -51 dBm; selectable
Test Capabilities — Analog loopback, analog loopback self-test,
self-test with errors, digital loopback, remote
digital loo.pback self-test, external analog
loopback (4-wire), external analog loopback
self-test (4-wire); front-panel TIA/EIA or front-
panel Hayes control
AC Power — Stand-alone: 90-132 VAC, 60 Hz ±5%
Rackmount: 117/220 VAC
Power Consumption — 13 watts
Heat Generation — 44 BTU/hr
Ringer Equivalence — 0.7 B
Environment — Ambient temp: 32 to 120°F (0 to 49°C)
Storage temp.: 20 to 180°F (-7 to 82°C)
Relative humidity: 5 to 90% at 24°C (75°F)
non-condensing
Size (stand-alone unit) — 2.5"H x 9.7"W x 10.1"D (6.4 x 24.6 x 25.7 cm)
Weight — Stand-alone: 4.1 lb (1.9 kg)
Rackmount: 2 lb. (0.9 kg)

8
Modem 34336
2.0 Quick Start
All information in this manual applies to both the stand-alone and rack-
mount versions of the Modem 34336.
Q UICK S ETUPS FOR A Q UICK S TART
The simplest and fastest way to set up the Modems for immediate use is to
select one of the factory-preset Quick Setup configurations.
Quick Setups are explained in Section 2.3, following installation instructions
(Section 2.1) and a brief introduction to the Modem’s front-panel display and
controls (Section 2.2).
2.1 Installation
2.1.1 U NPACKING
Many early modem failures are a result of damage done during shipping.
Visually inspect your modem. Keep the original shipping carton in case
you have to return the modem for any reason.
2.1.2 P ACKAGE C ONTENTS
All models include the following cables:
• A two-conductor crossover cable for a dial-line connection.
• A four-conductor cable for a leased-line connection.
Both cables have an eight-pin modular connector (RJ-45) on one end and
a six-pin modular connector (RJ-12) on the other end. You will need to use
both of the supplied cables if you want to use the Modem for Leased-Line
Auto Recovery, which requires both a leased-line and dial-line connection.
The MD885A-R2, MD885AE-R2, and MD885A-R3 include a power supply.
The MD885A-R3 package also includes additional cables:
• (1) 10-ft. RS-232 cable
• (1) DB9 F to DB25 M adapter
2.1.3 W HAT Y OU W ILL N EED
• You will need an EIA RS-232 interface cable (supplied with the MD885A-
R3, not supplied with the MD885A-R2, MD885AE-R2, or MD885C-R2) to
connect the Modem to a DTE (data terminal equipment, usually a
computer).

9
2.0 Quick Start
• If you are operating the Modem in a manual dial mode, you also need
a standard telephone set.
2.1.4 C ONNECTIONS
Figure 2-1 shows how the Modem is connected to the computer or terminal,
AC power supply, phone lines, and handset.
Do not install the modem more than 50 feet (15.2m) from the DTE (the
EIA standard maximum length for interface cable). For DTE speeds greater
than 19.2 Kbps, a shorter low-capacitance DTE interface cable should be used.
Call technical support for information on which cable will support your
application.
For all applications:
• Connect your RS-232 cable to the rear-panel DB25 connector labeled
DTE. Connect the other end to your computer or other DTE.
• Attach the power transformer cable (included) to the rear-panel
connector labeled POWER. Plug the other end into an AC outlet.
Figure 2-1. Modem 34336 Connections.
DTE DIAG
TX
DIAL
RX
DIAL
LEASED
LINE PHONE
POWER
DTE AC outlet Telephone
Dialup
Line
Leased
Line
RS-232
cable
Power
trans-
former