9500 MXC User Manual
3DB 23063 ADAA - Rev 004 July 2007 Vol. II-3-109
• The nominal loss through each coupler is 3.5 dB, meaning an additional 7 dB
loss must be included in the system gain calculations for each link.
• All RAC 40 capacity options are supported for 2+2 protection: 64x, 75xE1,
70x, 84x, 100xDS1, or STM1/OC3.
• The example illustrates a repeater/aggregation Node with a 16xE1 drop. While
the up-haul capacity on the lower INUe may therefore only need to support
59xE1, because its co-channel partner is still transporting 75xE1 traffic, it must
also be over-air configured for 75xE1.
Figure 3-60. 2+2 Hot-standby 75xE1 Co-channel Links
NCC
RAC 40RAC 40
16xE1
Fan
Fan
NCC
RAC 40
RAC 40
RAC 40
RAC 40
NPC
Slot 7
Slot 8
Slot 6
Slot 9
Slot 3
INUe
16xE1
75xE1 (H) 75xE1 (H)
V
V
H
H
ODU 300s ODU 300s
75xE1 (V) 75xE1 (V)
RAC 40 RAC 40
Fan
Slot 3
Fan
NCC
INUe
NPC
DAC 16x
Slot 7
Slot 8 Slot 9
16xE1 drop/insert
RAC 40
RAC 40
RAC 40
RAC 40
Coupler
XPIC cables
75xE1
75xE1 75xE1
75xE1
16xE1
CCDPCCDP
2+2 HS CCDP Node
VV
HH
Ch A Primary
Ch A Secondary
Ch B Primary
Ch B Secondary
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