Handbook

ClearFill Star CDMA
1100187 Rev. 1.0
Page 34 of 152
3.3.5 Number of GES
The Gigabit Ethernet switch supports the functionality of the Remote Radio Heads and the
NMS. All GES-settings are controlled and realized via NMS.
The GES provides Power over Ethernet (POE) to the RRHs and the BSI.
The GES can handle RRHs supporting voice, data and beacon service and BSI’s.
Up to 12 Ethernet ports are available at the GES. Ports 11 and 12 can be used as optical
ports, by using these ports only ports 1 to 10 can be used for an Ethernet based connection.
The optical ports of the GES can be used to overcome the Ethernet based distance limitation
of 100m (330ft) for cascaded Gigabit Ethernet switches (tier 2 level, …) and/or the NMS.
Figure 17 GES front view
Ethernet ports 1-10 (RJ-45 type) are for connection of:
 3G1x from/to BSI
 EVDO from/to BSI
 NMS
 RRHs for 3G1x
 RRHs for EVDO
 RRHs for Beacon
Ethernet ports 11 and 12 are meant to connect GES to:
 Tier 2/TierX Gigabit Ethernet Switches
 NMS
Optical ports (SFP type), can be used alternatively to Ethernet Port 11 and 12, for connection
of:
 Gigabit Ethernet Switches
 NMS
The system structure for the GES and RRHs should be designed as a star hierarchy, so that
each RRHs is connected to the main (Tier1) GES through the same number of GES.
Data, voice and beacon RRHs can be mixed at the cascaded GES. The last cascade needs
one Ethernet port for the connection to the next GES (in topology). This ensures that 11
Ethernet ports can be used for the RRHs. Up to 16 RRHs for each service (data or voice)
can be connected to a single BSI.
The Tier1 or main GES will act as the central point for all switches and the NMS, it is called
root switch.