Service & Support

Subrate Digital Access Devices 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 Subrate Digital Access Device Technical Manuals, click here.

User's Guides and Technical Reference Manuals

3550-A2-GB20-40        8/99
3550 Series Data Service Units, Models 3550 and 3551, User's Guide

3610-A2-GB41-70        8/99
COMSPHERE 3600 Series Data Service Units, Models 3610 and 3611, Time Division Multiplexer, Multichannel Multipoint, and Digital Bridge Options, Applications Guide

3610-A2-GB46-60        12/96
COMSPHERE 3600 Series Data Service Units, Models 3610 and 3611, User's Guide

3610-A2-GB48-70        4/99
COMSPHERE 3600 Series Data Service Units, Models 3610 and 3611, Time Division Multiplexer, Multichannel Multipoint, and Digital Bridge Options, Supplement

3610-A2-GB49-40        2/02
COMSPHERE 3600 Series Data Service Units, Models 3610 and 3611, Dial Backup Options Supplement

3610-A2-GB91-90        8/99
COMSPHERE 3600 Series Data Service Units, Models 3610 and 3611, Operator's Guide

3610-A2-GN32-70        12/96
COMSPHERE 3600 Series Data Service Units, Models 3610 and 3611, Dial Backup Module and SNA Diagnostic Interface Options Application Guide

3615-A2-GB20-40        8/99
DualFlow Data Service Units, Models 3615 and 3616, User's Guide

7520-A2-GB20-20        5/98
Model 7520 DSU User's Guide

7612-A2-GB20-10        11/97
Model 7612 SNMP DSU, with Internal Ethernet LAN Adapter, 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-GZ41-60        12/99
Rear Connector Plate and Modular DSU V.35 Adapter Installation Instructions

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

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

3000-A2-GZ45-20        2/00
NMS Adapter Cable, Feature Number 3000-F2-510, Installation Instructions

3000-A2-GZ47-30        2/00
Network Interface Cable, Network Interface Module Installation, Feature Numbers 3000-F1-0xx, 3600-F2-5xx, 4400-F1-50x, 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

3510-A2-GL10-20        8/99
COMSPHERE 3500 Series Data Service Units, Models 3510 and 3511, Quick Reference

3550-A2-GL10-20        8/99
COMSPHERE 3550 Series Data Service Units, Models 3550 and 3551, Quick Reference

3550-A2-GZ50-10        12/96
Model 3550 2-Port TDM/Flex Upgrade, Feature Number 3550-F1-202, Installation Instructions

3550-A2-GZ51-10        12/96
3550 DBM Installation Instructions

3610-A2-GB43-50        12/96
COMSPHERE 3600 Series Data Service Units, Models 3610 and 3611, Documentation Replacement

3610-A2-GL11-20        2/04
COMSPHERE 3600 Series Data Service Units, Models 3610 and 3611, Quick Reference

3610-A2-GL12-00        12/98
COMSPHERE 3600 Series Data Service Units, Time Division Multiplexer, Multichannel Multipoint, and Digital Bridge Options, Quick Reference

3610-A2-GL13-00        12/98
COMSPHERE 3600 Series Data Service Units, Dial Backup Module, Quick Reference

3610-A2-GZ41-70        4/99
Ferrite Choke Installation Instructions

3610-A2-GZ43-30        12/96
3600 Series DSU Firmware, Installation Instructions Feature Number 3600-F2-011, 3600-F2-012, 3600-F3-704

3610-A2-GZ45-30        6/97
3600 Hubbing Device Installation Instructions

3610-A2-GZ51-10        12/96
3610 TDM/Flex and MCMP Flex Installation Instructions

3610-A2-GZ52-40        12/96
3600 DBM Option Installation Instructions

3610-A2-GZ53-20        12/96
Model 3610 Extended Range DSU Installation Instructions

3610-A2-GZ56-00        10/00
3600 Series 28.8 Kbps DBM Option Installation Instructions

3611-A2-GZ43-30        2/00
Modular TDM, Feature Number 3600-F3-204, Modular MCMP, Feature Number 3600-F3-205, Installation Instructions

3615-A2-GL10-00        1/99
COMSPHERE DualFlow DSU Quick Reference

7520-A2-GN10-10        12/98
Model 7520 DSU Startup Instructions

7612-A2-GN10-20        12/98
Model 7612 SNMP DSU, with Internal Ethernet LAN Adapter, Startup Instructions

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Notices and Addenda

3600-A2-GZ60-00        5/95
3600 Series Data Service Unit ARDIS Abstract

3610-A2-GK40-22        3/97
Special Notice (COMSPHERE 3600 EC)

3610-A2-GK41-20        9/97
Special Notice (230 Vac Power Transformer)

3610-A2-GK42-00        11/95
Special Notice (Models 3610/3611 GBCS)

3610-A2-GK43-20        3/98
Special Notice

3610-A2-GK44-00        1/98
Special Notice

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If you are looking for older versions of Subrate Digital Access Device 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.