M900/M1800 BTS3X Series Base Transceiver Station
Hardware Description Manual
3 Board
Issue 01 (2006-11-18)
Huawei Technologies Proprietary
3-73
ID
Meaning
Port Type
Function
MMI
Man machine port
DB9
Port for the BTS local
maintenance
3.21.4 DIP Switch
shows the TMU layout.
Figure 3-48
TMU layout
1 2 3 4
S10
ON
1 2 3 4
S11
ON
1 2 3 4
S2
ON
1 2 3 4
S1
ON
1 2 3 4
S9
ON
S6
1 2 3 4
S12
ON