Cisco Systems MGX 8800, MGX 8900 2-49, Figure 2-19 shows how redundant PXM1Es connect to standalone lines., Figure 2-20 shows how redundant PXM1Es connect to redundant APS lines.

2-49
Cisco MGX 8800/8900 Series Hardware Installation Guide
Releases 2 - 5.2, Part Number OL-4545-01, Rev. H0, May 2006
Chapter2 Illustrated Card List for MGX Switches and the MGX 8880 Med ia Gateway
Front Cards
Figure 2-19 shows how redundant PXM1Es connect to standalone lines.
Figure2-19 Card Set Redundancy Configuration—PXM1Es
Note In Figure 2-19, the clock ports on the UI-S3 back cards must be Y-cabled.
Figure 2-20 shows how redundant PXM1Es connect to redundant APS lines.
Figure2-20 1+1 Card and APS Line Redundancy Configuration—PXM1Es
PXM1E front cards
Y-cables
80148
Midplane
1
2
PXM-UI-S3/B back cards
OC-3c or OC-3c/DS3 combination back cards
1
2
PXM1E front cards
Y-cables
80148
Midplane
1
2
PXM-UI-S3/B back cards
OC-3c or OC-3c/DS3 combination back cards
1
2
PXM1E front cards
80149
Midplane
PXM-UI-S3/B back cards
OC-3c or OC-3c/DS3 combination back cards
1
2
1
2
Working line 1.1
Protection line 1.1
Protection line 1.2
Working line 1.2