TONE-BD (Tone-Clock Circuit)
Issue 1 May 2002
8-1663555-233-143
Figure 8-100. Critical-Reliability Configuration
Tone-Clock Interchange Strategy
There are three types of Tone-Clock interchanges:
■ Autonomous interchanges initiated as a part of maintenance software
strategy for the Tone-Clock or IPSI circuit packs.
■ Manual interchanges initiated by entering the set tone-clock or set
ipserver-interface command.
■ Firmware-initiated Tone-Clock interchanges
IPSI IPSI
EI EI
EPN 1
IPSI IPSI
EI EI
EPN 2
Server A Server B
Control Network A Control Network B
Bearer Network A Bearer Network B
T/C T/C
EI EI
EPN 3
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