User's Manual

CrossFire – A revolution in RF Transport for In Building Wireless
User Manual
17 Revision 1.0.1
BTS
RRU
2G
3G
RRULTE
AU
EU1
EU4
Fiber
Fiber
EU5
EU8
Fiber
Fiber
WLAN Switch
EU9
EU12
Fiber
Fiber
WLAN Switch
EU13
EU16
Fiber
Fiber
WLAN Switch
RU1
RU2
RU3
RU4
RU5
RU6
Fiber
Fiber
Fiber
Fiber
Fiber
WLAN Switch
WLAN Switch
WLAN Switch
WLAN Switch
Fiber
EU17
EU20
Fiber
Fiber
WLAN Switch
EU21
EU24
Fiber
Fiber
WLAN Switch
WLAN Switch
WLAN Switch
Cali
WLAN Switch
Figure 1-2 Typical System Framework for the IDAS
1.5. Networking Layout
The IDAS has a number of different networking layouts shown as Figure 1-3:
 The AU supports a star network. Note that the Master-AU can connect to a maximum of two Slave-AUs
simultaneously.
 The EU supports a daisy-chained network (for EU—EU) and a star-type network (for EU—RU).
 In smaller systems, the AU and RU can be directly connected without the EU, as shown in Figure 1-3.
 For a direct AU—RU connection, an RU can cascade up to five RUs at different levels. For an AU—EU—RU
connection, an RU can cascade up to four RUs at different levels.