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Business Class Analog Modems Technical Manuals

User's guides and technical references, click here.
These contain detailed configuration and application information.

Installation instructions and quick references, click here.
These contain hardware installation and configuration information, and are usually shipped with the product.

Notices and addenda, click here.
These are miscellaneous small documents such as regulatory notices, warnings, and additions to the larger documents.

If you are looking for older versions of Business Class Analog Modem Technical Manuals, click here.

User's Guides and Technical Reference Manuals

3810-A2-GB30-30       9/98
Quick Reference for 3810-A2-GB30-30
COMSPHERE 3800 Series Modems, Models 3810, 3811, and 3820, User's Guide

3821-A2-GB20-40        2/98
COMSPHERE 3821Plus Modem User's Guide

3825-A2-GB30-41        2/02
COMSPHERE 3825Plus Modem User's Guide

3830-A2-GB91-30        9/98
COMSPHERE 3800 Series Modems, Model 3830, User's Guide

3910-A2-GN32-41        2/02
COMSPHERE 3900 Series Modems, Models 3910 and 3911 Point-to-Point/Multipoint, Installation and Operation Manual

3920-A2-GH30-41        2/02
COMSPHERE 392xPlus Modems Models 3920Plus and 3921Plus Technical Reference Manual

3980-A2-GB30-41        2/02
COMSPHERE 3800Plus Modems User's Guide

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Installation Instructions and Quick References

3000-A2-GB41-50       10/02
COMSPHERE -48 Vdc Central Office Power Unit Installation Guide

3000-A2-GZ43-20        5/98
COMSPHERE Power Module, Feature Number 3000-F1-022, Installation Instructions

3000-A2-GZ44-20        2/00
Air Filter, Feature Number 3000-F1-020, Installation Instructions

3000-A2-GZ50-10        12/96
COMSPHERE 3000 Series Carrier Fan Module Installation Instructions

3000-A2-GZ52-10        12/96
Power Transformer Unit Installation Instructions

3810-A2-GL10-10       11/98
COMSPHERE 3800 Series Modems, Models 3810, 3811, and 3820, Quick Reference

3810-A2-GZ42-20       2/00
Ferrite Choke, Part Number 175-0018-0031, Installation Instructions

3810-A2-GZ43-30        2/00
3800 Speaker Panel, Feature Number 3800-F1-011, Installation Instructions

3821-A2-GL10-10        1/99
COMSPHERE 3821Plus Modem Quick Reference

3821-A2-GZ40-10        11/96
COMSPHERE 3821Plus 6-Port DTE Interface Assembly Installation Instructions

3825-A2-GK40-10        11/96
COMSPHERE 3825Plus Modems Ferrite Choke Installation Instructions

3825-A2-GL10-30       10/03
COMSPHERE 3825Plus Modem Quick Reference

3825-A2-GZ40-00        10/98
COMSPHERE 3825Plus Modem Power Supply Ferrite Choke Installation Instructions

3830-A2-GL10-00        1/99
COMSPHERE 3800 Series Modems, Model 3830, Quick Reference

3910-A2-GK41-40        2/02
COMSPHERE 3900 Series Modems, Models 3910 and 3911, Installation Instructions

3910-A2-GK43-10        11/96
COMSPHERE 3900 Series Modems Ferrite Choke Installation Instructions

3910-A2-GK46-10        11/96
COMSPHERE 3900 Series Modems, Dual Ferrite Choke, Installation Instructions

3910-A2-GK50-10        11/96
COMSPHERE 3910 Ferrite Choke Installation Instructions

3910-A2-GK63-10        11/96
COMSPHERE 3900 Series Modems, Model 3911, Ferrite Choke Installation Instructions

3920-A2-GK40-10        11/96
COMSPHERE 3900 Series Modems, Ferrite Choke Installation Instructions, Model 3921Plus

3920-A2-GK41-60        2/02
COMSPHERE 392x Series Modems, Models 3920Plus and 3921Plus, Installation Instructions

3920-A2-GK47-10        2/02
COMSPHERE 3920Plus Modems, Model Number 3920-A2-xxx, Installation Instructions

3980-A2-GK42-10        11/96
COMSPHERE 3810Plus Modems, Model 3810-A2-401, Installation Instructions

3980-A2-GL10-10        2/02
COMSPHERE 3800Plus Series Modems, Models 3810Plus and 3811Plus, Quick Reference

3980-A2-GZ41-20        6/98
COMSPHERE 3811Plus Modem Installation Instructions

3982-A2-GK40-10        11/96
COMSPHERE 3820Plus Modems, Model 3982-A2-401, Installation Instructions

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Notices and Addenda

3810-A2-GB93-30        9/98
COMSPHERE 3800 Series Modems, Models 3810, 3811, and 3820, Japan Supplement

3821-A2-GX40-00        5/98
COMSPHERE 3821Plus Modem for Germany Safety Notice

3825-A2-GX40-00        5/98
COMSPHERE 3825Plus Modem for Germany Special Notice

3830-A2-GB41-10        11/96
Update to COMSPHERE 3800 Series Modems, Model 3830, User's Guide

3900-A2-GE11-11        11/96
Firmware License Agreement Supplement 28.8 Kbps Proprietary Modulation Feature 3900-D1-08X

3900-A2-GK40-30        12/00
Firmware Compatibility Notice

3910-A2-GB40-10        11/96
Notice to the New Zealand Telecom Switched Telephone Network

3910-A2-GB41-10        1/97
Notice to the Users of 39xx Series Modems in Australia

3910-A2-GK42-10        11/96
COMSPHERE 3900 Series Modems, Models 3910 and 3911, Government Requirements for Great Britain

3910-A2-GK44-10        11/96
COMSPHERE 3900 Series Modems Firmware Update Description, Release 2.2

3910-A2-GK45-10        11/96
COMSPHERE 3900 Series Modems Firmware Update Description, Release 2.5

3910-A2-GK61-20        9/98
COMSPHERE 3900 Series Modems, Models 3910 and 3911, Firmware Update Description, Release 2.61

3920-A2-GK45-10        11/96
COMSPHERE 3900 Series Modems, Models 3920Plus and 3921Plus, Government Requirements for the United Kingdom

3920-A2-GX10-10        11/96
Notes for the Use of this Device in New Zealand

3920-A2-GX11-10        11/96
Notice to the User of the Australian Telecommunications Network, Paradyne Models 3920/3921

3920-A2-GX40-00        6/98
Regulatory Notice - Taiwan BCIQ Warning

3980-A2-GK40-20        11/96
COMSPHERE 3800Plus Modems Government Requirements for Great Britain Supplement

3980-A2-GK41-10        11/96
COMSPHERE 3800Plus Modems Japanese Supplement

3980-A2-GZ40-20        11/96
COMSPHERE 3800Plus Modems Synchronous Data Compression Feature

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If you are looking for older versions of Business Class Analog Modem Technical Manuals, click here.  

For user's guides and technical references, click here.
For installation instructions and quick references, click here.
For notices and addenda, click here.