Chapter
13
Installing the Integrated
Micro-BTS
13-7
13.1.4 Networking Modes of the Integrated SDH
The built-in SDH technology is employed to make even more flexible networking of
the micro-BTS and to address basically various networking requirements. The built-in
SDH is a standard SDH STM-1 optical interface, which supports independent
networking or networking with cooperation of an SDH device. The built-in SDH also
supports directly fiber networking and has ring network protection capability. The
built-in SDH cooperates with the SDH transmission equipment via standard T1
interfaces to flexibly support different networking modes such as point-to-point, chain,
T-type, cross and ring modes and other hybrid networking modes. The built-in SDH
micro-BTS supports independent networking or networking with cooperation of a
standard SDH device.
13.2 Installing the Built-in SDH of Micro-BTS
13.2.1 Position and Internal Connection of the Built-in SDH in the Micro-BTS
13.2.1.1 Connections of the Built-in SDH
Table 13.2-1 gives the cable connections of the built-in SDH in the CDMA micro-BTS.
Table 13.2-1 Cable Connection of the Built-in SDH inside the CDMA Micro-BTS
No.
Cable Name
Length (mm)
To End A
To End B
1 Power
cables
950
SDH-POWER (at the
bottom of the cabinet)
SDH
-
X22
850 BDM_OUT1
SDH
-
R1
850 BDM_IN1 SDH
-
T1
850 BDM_OUT2
SDH
-
R2
2 RF
cable
850 BDM_IN2 SDH
-
T2
3
F
-
DC PWR
-
002
5000
SDH-POWER (at the
bottom of the cabinet)
UPS power
supply
FIBER
-
3 (at the bottom
of the cabinet)
SDH
-
D43
4
Fiber cable
As required on site
FIBER
-4
(at the bottom
of the cabinet)
SDH
-
D44
13.2.1.2 Schematic Diagram of Internal Cable Connection
Fig. 13.2-1 gives the cable layout of the built-in SDH in the CDMA micro-BTS.