Failed Communication Between The Smt And The Bts; Faulty E1 Link - Huawei BTS3900 GSM Commissioning Manual

7 FAQs for BTS Commissioning

7.1 Failed Communication Between the SMT and the BTS

This describes the symptom of the communication failure between the SMT and the BTS and
analyzes the cause of the failed communication. It also provides the fault handling suggestions.
Fault Symptom
Log in to the BTS on the SMT fails. The result of running the ping commands shows that the
connection between the SMT PC and the BTS cannot be established.
Cause Analysis and Handling Suggestions
Table 7-1
Table 7-1 Possible causes and handling suggestions for failed communication between the SMT
and the BTS
Fault Cause
The Ethernet cable is faulty.
The IP address of the SMT PC is incorrect.

7.2 Faulty E1 Link

This describes the fault symptom and analyzes the cause of the faulty E1 link. It also provides
the fault handling suggestions.
Fault Symptom
Alarms related to the E1/T1 link are reported, or the upper link is faulty.
Analysis
When the E1 links are faulty, the cause may be one of the following:
l
l
l
Handling Suggestion
1.
7-2
lists the possible causes and related suggestions to handle the fault.
The physical connection of cable is faulty.
The crossed pair connection exists.
The BER in transmission is high.
Check the connections and connectors at both ends of the E1 link. Ensure that the
connections are reliable and the connectors are functional.
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Handling Suggestion
Check the connection of the Ethernet cable.
Check whether the RJ45 connectors on both
ends are functional. If the RJ45 connector is
faulty, replace it.
Check whether the IP address of the SMT PC
is on the same network segment as that of the
board.
BTS3900(A) GSM
Commissioning Guide
Issue 02 (2009-04-20)