Specifications

iv
New in this Version of the FOCUS System Manual
Changes which affect the technical use of this manual and the FOCUS equipment, are shown here. This list reports the most
current publication dates for each chapter. Dates in bold type indicate changes in the chapter, which are identified by a change
bar ||, placed to the left and/or right, just like the ones on this page.
Typographical corrections, minor word changes, etc. are not reported. Note, that text and graphics may have moved to a different
page than in the previous version due to formatting or layout changes.
Schematics are available upon request.
Chapter
Number
& Title Publication Date Pages with Changes
|| Front Section December 2008 ii
|| 1. Product Description December 2008 15, 21
|| 2. System Applications and Ordering December 2008 4, 5, 8, 9
|| 3. Installation December 2008 8
4. Acceptance Tests October 2007
5. Alternate Path Mode (APM) October 1999
|| 6. Chassis December 2008 2
|| 7. Maintenance Module December 2008 1, 9
8. Framer Module August 2006
|| 9. Power Supply Module December 2008 2, 3
|| 10. DE1/DS1 Transceiver Modules December 2008 1, 2, 7
11. Optical Transceiver Module August 2006
12. Two-Wire Voice (V2W/V2T) Module October 2007
|| 13. Four-Wire Voice (V4W) Module December 2008 4
|| 14. Protective Relay Interface (PRI/PRS) Module December 2008 14
15. Contact Transfer Module October 1999
|| 16. Low Speed Data (232) Module December 2008 1, 8
17. Current Diff. Interface (HCB/SPD) Module October 1999
|| 18. High Speed Data (64K) Module December 2008 1, 12
19. Party Line Data (PLD) Module August 2004
20. Addressable 2-Wire Voice (PBW/PBT) Module October 2005
|| 21. G.703 Interface (64G) Module December 2008 1, 6
|| 22. Sub-Rate Data Module (SRD-2/SRD-4) December 2008 3, 4, 5
23. FOCUS Communications Agent October 2005
|| 24. Ethernet Switch Module December 2008 1
|| 25. 6NF Module December 2008 4
|| 26. 6NR/NV Module December 2008 1, 5
27. Data Channel Unit October 2005
|| Appendix A December 2008 2