Maintenance-Object Repair Procedures
555-233-143
8-952 Issue 1 May 2002
System Configurations with Duplicated IPSIs
The following two figures show two system configurations. Figure 8-49 shows a
critical-reliability system (with duplicated IPSIs and directly connected PNCs).
Figure 8-50 on page 8-954 shows a critical-reliability system (with duplicated
IPSIs and CSS-connected PNCs).
Table 8-371. IPSI B is Active
Function IPSI A IPSI B EI
IPSI in
Another PN
Tone-Clock X
PKT-INT X
Archangel X
Table 8-372. IPSI A Provides Tone-Clock; Fall-Back to EI-EAL
Function IPSI A IPSI B EI
IPSI in
another PN
Tone-Clock X
PKT-INT X
Archangel X
Table 8-373. IPSI B Provides Tone-Clock; Fall-Back to EI-EAL
Function IPSI A IPSI B EI
IPSI in
Another PN
Tone-Clock X
PKT-INT X
Archangel X