Faulty E1 Link; Figure 11-1 Checking The Ip Address Of The Board - Huawei BTS3900 GSM Commissioning Manual

BTS3900 GSM
Commissioning Guide
6.
7.

11.2 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
When logical cells and all the links of upper layers are available, the E1 link on the BTS side is
abnormal.
Cause Analysis
The possible causes of the faulty E1 link are as follows:
l
l
Handling Suggestion
1.
Issue 03 (2008-07-15)
Run the hostShow command on the displayed HyperTerminal window to check the IP
address of the board. The IP address of the board is 12.12.12.100, as shown in
11-1.

Figure 11-1 Checking the IP address of the board

CAUTION
The IP address shown in
configurations on site.
Check whether the IP address of the Site Maintenance Terminal PC is on the same network
segment as 12.12.12.100. If the IP addresses are not on the same network segment, change
the IP address of the Site Maintenance Terminal PC by referring to
Address of the Site Maintenance Terminal
Improper physical connection of cables
High bit error rate (BER) in transmission
Check all the connections on the E1 link and the connectors at both ends of each cable.
Ensure that the connections are reliable and the connectors are functional.
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd
Figure 11-1 is only for reference and is subject to the actual
PC.
11 FAQs for BTS Commissioning
Figure
4.1 Setting the IP
11-3