Chapter 7. Circuit and Network Redundancy
61200290L1-1
MX2800 User Manual
7-3
CIRCUIT FAILURE RECOVERY MODE
In Circuit Failure Recovery Mode, two controller cards are installed
and a single DS3 line is coming in (see Figure 7-2). In this mode, the
MX2800 can continue operating in the event of a controller card
failure. When both cards are healthy, the primary card actively
processes data while the secondary card stands by ready to take
over if the first fails. The secondary card continuously monitors the
line and remains framed to the incoming signal.
See Table 7-1 on page 7-4 for a list of this mode’s configuration
requirements.
Figure 7-2. Circuit Failure Recovery Mode
During a card switch, service interruption is experienced on both the DS3
and the DSX1 connections. However, since the secondary controller card
remains framed to the incoming signal at all times, it is a minimal inter-
ruption.
Summary of Contents for TOTAL ACCESS MX2800
Page 8: ...viii MX2800 User Manual 61200290L1 1...
Page 16: ...List of Tables xvi MX2800 User Manual 61200290L1 1...
Page 100: ...Chapter 7 Circuit and Network Redundancy 7 6 MX2800 User Manual 61200290L1 1...
Page 106: ...Chapter 8 Power Loss Recovery 8 6 MX2800 User Manual 61200290L1 1...
Page 110: ...Appendix A Pinouts A 4 MX2800 User Manual 61200290L1 1...
Page 114: ...Appendix B Specifications Summary B 4 MX2800 User Manual 61200290L1 1...
Page 130: ...Appendix D Glossary D 12 MX2800 User Manual 61200290L1 1...
Page 140: ...Index Index 10 MX2800 User Manual 61200290L1 1...
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