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COMSPHERE 3600 Series Data Service Units
iv March 1999 3610-A2-GB41-60
Figure Page
4-25 Case 4 – Backing Up (Up to) Three Channels via the FEP Port-Sharing Feature 4-32. .
4-26 Digital Bridge/DCE Interface 4-33. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-27 Aggregate Switched Backup for MCMP Circuit Configuration 4-34. . . . . . . . . . . . . . . .
4-28 Multipoint with Digital Bridging 4-35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-29 Maximum Bridging Capability – Up to 20 Bridging Ports 4-36. . . . . . . . . . . . . . . . . . . .
4-30 Broadcasting Data Through the Digital Bridge 4-37. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-31 Multipoint DDS Circuit in Partial Backup 4-39. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-32 Tributary Addressing via DDS Connections 4-40. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-33 Tributary Addressing via Backup Connections 4-41. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-34 Central-Site Bridging Architecture (9.6 kbps) – Normal Operation with
Partial Backup Possible 4-42. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-35 Central-Site Bridging Architecture (9.6 kbps) – Partial Backup in Effect 4-43. . . . . . . .
4-36 Central-Site Bridging Architecture (56 kbps) – Inactive Digital Bridge 4-44. . . . . . . . . .
4-37 Central-Site Bridging Architecture (56 kbps) – Active Digital Bridge 4-45. . . . . . . . . . .
4-38 Bridged LADS Operation 4-50. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-39 Bridged LADS Architecture and Signal Flow 4-51. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-40 Digital Bridge/DSU Interface 4-52. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-41 Sample Configuration and LPDA-2 Addressing 4-54. . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-42 Dial Backup with LPDA-2 Configuration 4-55. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-43 Multipoint Dial Backup with LPDA-2 4-56. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-44 Multiplexing with TDM (LPDA-2 Monitoring) 4-57. . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-45 Multiplexing with MCMP (LPDA-2 Monitoring) 4-57. . . . . . . . . . . . . . . . . . . . . . . . . . .
4-46 Digital Sharing in a Point-to-Point Circuit 4-58. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-47 Digital Sharing in a Multipoint Circuit 4-59. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-48 Digital Sharing in a TDM Circuit (LPDA-2 Monitoring) 4-60. . . . . . . . . . . . . . . . . . . . .
4-49 Digital Sharing in an MCMP Circuit (LPDA-2 Monitoring) 4-61. . . . . . . . . . . . . . . . . .
5-1 Model 3611 DSU and TDM Faceplates 5-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-2 Model 3611 DSU and MCMP Faceplates 5-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-3 DBM-V, DBM-S, and DBM-D Faceplates 5-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-4 Device Test 5-16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-5 Local Loopback 5-17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-6 DTE Loopback on Port 2 5-19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-7 Digital Loopback 5-20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-8 Remote Digital Loopback 5-22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-9 Bilateral Loopback 5-24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-10 Digital Test 5-26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-11 End-to-End Test 5-28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-12 Bit Error Rate Tests in TDM or MCMP Mode 5-30. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-13 Choosing Mode of Operation and Setting Configuration Options 5-35. . . . . . . . . . . . . .
C-1 TDM Interface Cable (Feature Number 3600-F2-500) C-2. . . . . . . . . . . . . . . . . . . . . . .
C-2 Digital Bridge Interface Cable (Feature Number 3600-F2-501) C-5. . . . . . . . . . . . . . . .
C-3 Pin Locations on the 60-Position High-Density Connector of the Non-Modular
Carrier-Mounted TDM/MCMP Circuit Card C-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C-4 Modular DSU V.35 Adapter (3000-F1-510) C-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C-5 6-Port Connector Module (Part Number 870-1700-0011) C-14. . . . . . . . . . . . . . . . . . . . .
C-6 6-Port V.35 Interconnect Cable (Feature Number 3600-F3-500) C-16. . . . . . . . . . . . . . .
D-1 TDM Configuration: Scenario 1 – Two Synchronous Channels D-2. . . . . . . . . . . . . . . .
D-2 TDM Configuration: Scenario 2 – Switched 56 kbps Dial Backup D-4. . . . . . . . . . . . .
D-3 Digital Bridge Configuration: Automatic Partial Backup – Dial Backup
Not Active D-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
D-4 Digital Bridge Configuration: Automatic Partial Backup – Dial Backup Active D-7. . .
D-5 Digital Bridge Configuration: Full Backup – Dial Backup Active D-8. . . . . . . . . . . . . .
D-6 Multipoint Full Dial Backup with Nondisruptive Diagnostics Configuration D-11. . . . . .