User Manual
iSiteC BTS3601C CDMA Base Station
System Description
Chapter 3 System Function
3-35
BTS3601C
BSC
SDH
STM-1
STM-1
STM-1
STM-1
BTS3601C
BTS3601C
Figure 3-14
Star networking (connected to SDH transmission ring via STM-1 interface)
BTS3601C
BSC
SDH
E1
E1
E1
E1
BTS3601C
BTS3601C
Figure 3-15
Star networking (connected to SDH transmission ring via E1 interface)
II. Optical fiber chain networking
Optical fiber chain networking requires the support of SDH transmission system. The
BTS3601C is connected to the transmission system via the STM-1 interface, as
shown in Figure 3-16.
STM-1
STM-1
-
BSC
BTS3601C
BTS3601C
STM-1
STM-1
-
BSC
BSC
BTS3601C
BTS3601C
BTS3601C
BTS3601C
Figure 3-16
Chain networking
Since each BTS3601C obtains E1 from the transmission system via its own SDH155
optical interface board, and is logically connected to the BSC via its E1 link, optical
fiber chain networking is actually a kind of star networking.