ADC InterReach 800 ESMR - Manual (Page 6)

6/08
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102440AE
InterReach
®
In-building
c
overage
Solution
6 w w w . a d c . c o m • + 1 - 9 5 2 - 9 3 8 - 8 0 8 0 • 1 - 8 0 0 - 3 6 6 - 3 8 9 1
Multiple Fiber Types
InterReach ICS accommodates any combination of single-mode and multi-mode fibers between elements
host, expansion, and remote units.
Free Space Optics (FSO) Installation
Only digital transport can utilize free space optics for building-to-building links where fiber is either not
available or cannot be deployed in a timely or cost-effective manner. Free space optics distances are
determined by service level availability, but are typically in the range of 500 meters to 1 kilometer.
Wave Division Multiplexing (WDM)
InterReach ICS typically is transported over dedicated strands of fiber (a pair of fiber for transmit and
receive paths.) Because of the digital transport, ICS can utilize WDM technology, essentially combining
two waves to one, reducing the required fiber count by half. Optical budgets will be dependent on
the added losses with WDM (the passive modules and added connectors) and the selection of the
SFP transceivers.
Pay As You Grow
Expansion units can be added as growth or capacity needs change by simply adding additional
transceivers, expansion units or remote units. Expanding the InterReach ICS system does not require
adding splitters at the host location or re-optimization as long as the RF parameters remain the same.
Conversely, non-utilized ports can simply be shut off without affecting system performance.
BTS/Off Air Interface
Multimode Fiber Singlemode Fiber
SM SM MM MM
RU RU RU RU
Host Unit
RU RU
RU RU RU
RU
Expansion Unit
RU RU
RU RU RU
RU
Expansion Unit
Growth
BTS/Off Air Interface
Digital Host Unit
Expansion
DRU
DRU DRU DRU
DRU
Digital Expansion Unit
DRU DRU
DRU DRU DRU
DRU
InterReace ® In-building Coverage Solution
800 ESMR, 850 Cellular, 1900 PCS