Miranda NV8144 - Expandable Frames and Signal Numbers

10 Rev 2.2 • 27 Mar 10
1. Introduction
Signal Rates and Flow
Figure 1-8 shows the standalone NV8280 frame and which signal numbers correspond to which
slots when viewing the router from the front.
Figure 1-6. Example of NV8280 Slots and Corresponding Signal Numbers (Front View)
Figure 1-7 shows the standalone NV8144 frame and which signal numbers correspond to which
slots when viewing the router from the front.
Figure 1-7. Example of NV8144 Slots and Corresponding Signal Numbers (Front View)
Expandable Frames and Signal Numbers
Expandable router frames contain backplanes similar to the standalone routers except that the con-
nectors housed on the backplanes are different. Each backplane contains either 9 input connectors
or 9 output connectors plus two high-density expansion connectors. This means that input slot 1
corresponds to inputs 1–9, input slot 2 corresponds to inputs 10–18, and so on, up to the maximum.
For outputs, output slot 1 corresponds to local outputs 1–9 and forwards through the expansion
connectors outputs to the second router, and so on. For example, in the NV8576-Plus frame, output
FAN
INPUTS
1144
XPT (INPUTS 1144)
INPUT MONITOR
(8 cards)
OUTPUTS
145288
(8 cards)
OUTPUTS
289432
(8 cards)
OUTPUTS
433576
(8 cards)
OUTPUT MONITOR
(16 cards)
INPUTS
145288
(16 cards)
OUTPUTS 1288
OUTPUTS 289576
SEC. CONTROL PRIM. CONTROL
XPT (INPUTS 1144)
XPT (INPUTS 145288)
XPT (INPUTS 145288)
XPT (INPUTS 1144)
XPT (INPUTS 1144)
XPT (INPUTS 145288)
XPT (INPUTS 145288)
REDUNDANT CROSSPOINT
OUTPUTS
1144
1
18
127
144
145
288162
271
289
306
432
415
433
576
450
559
145
153
288
280
1
9
136
144
FAN
INPUTS
1144
MONITOR
(16 cards)
SEC. CONTROL PRIM. CONTROL
(8 cards)
XPT (INPUTS 1144)
XPT (INPUTS 1144)
POWER SUPPLY
POWER SUPPLY
1
9
136
144
OUTPUTS
1144
1
18
127
144