3 Board
M900/M1800 BTS3X Series Base Transceiver Station
Hardware Description Manual
3-72
Huawei Technologies Proprietary
Issue 01 (2006-11-18)
ID
Color
Meaning
Indication
LI2
Green
E1 indicator
ON: The second E1 generates local alarm.
Flashing: The second E1 generates remote
alarm.
OFF: The second E1 is normal.
LI3
Green
E1 indicator
ON: The third E1 generates local alarm.
Flashing: The third E1 generates remote
alarm.
OFF: The third E1 is normal.
LI4
Green
E1 indicator
ON: The forth E1 generates local alarm.
Flashing: The forth E1 generates remote
alarm.
OFF: The forth E1 is normal.
M/S Green
Active/Standby
indicator
ON for 500 ms and OFF for 500 ms.: TMU
is the active board.
ON for one second and OFF for one
second.: TMU is the standby board.
ON, OFF or flashing non-periodically:
TMU is faulty.
PLL Green Phase
discrimination
indicator
ON: Clock is running in free-run mode.
ON for 125 ms and OFF for 125 ms.: clock
is running in trapping mode.
ON for 500 ms and OFF for 500 ms.: Clock
is running in locking mode.
OFF: The phase discrimination of clock is
abnormal.
The local alarm is the receiving tributary alarm of transmission line. The remote alarm is the sending
tributary alarm of transmission line.
If the TMU is standby, the LIn is corresponded to the alarm indicators of n +4-channel E1s. (n=1, 2, 3, 4)
lists the description of the TMU ports.
Table 3-40
TMU ports
ID
Meaning
Port Type
Function
RST
Reset button
–
Reset button for the TMU
DBG
Ethernet port
–
Debug network port
T2M
Clock output port
SMB
2 MHz output port
FCK
Clock output port
SMB
Frame clock output port
T13M
Clock output port
SMB
13 MHz output port