ADC HDSL4, H4TU-C-319 List 1 Line Unit user manual Appendix B Functional Operation

Table of Contents	LTPH-UM-1031-03, Issue 3
System Alarms	42
Alarm Option for DLC Feed	44
Retiring System Alarms	44
Remote LOS and AIS Response	45
OCT55 Test Pattern with AMI Line Code	45
Loopback Operation	46
Generic Loopback Commands	47
Special Loopback Commands	47
Manual Loopback Session	48
Loopback Test Procedures	49
General Troubleshooting Tips	49
GNLB Test Procedures	51
A3LB Test Procedure	52
A5LB Test Procedure	53
Testing with H4TU-C BERT Generator	56
Testing with H4TU-R BERT Generator	57
Appendix A - Specifications ____________________________________________________________ 58
Power Consumption	60
Maximum Power Dissipation	60
Maximum Current Drain	61
Loop Attenuation, Insertion Loss, and Reach	61
H4TU-C-319Card-Edge Connector	62
Network Management Control Bus	62
Fuse Alarm	62
System Alarm Output Pin	63
Craft Port	63
Appendix B - Functional Operation _____________________________________________________ 64
Timing	64
Ground Fault Detection	64
Spectrum Issues	64
Appendix C - Compatibility____________________________________________________________ 65
Appendix D - Product Support _________________________________________________________ 66
Appendix E - Abbreviations____________________________________________________________ 67
Certification and Warranty ____________________________________________________________ 70

vi September 12, 2003 H4TU-C-319 List 1