Zte ZXG10 BS21, Руководство по обслуживанию

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ZXG10 BS21 (V2.2) Compact Outdoor BTS for GSM Maintenance Manual
82 Confidential and Proprietary Information of ZTE CORPORATION
Summary of Notification
Information
BTS notification information indicates the non-repeatable or instant
abnormal event that happens during BTS’s running, informing the
maintenance personnel of the running statuses of BTS's every part.
No Traffic Notification in BS Cell
1. Description
There is no traffic in the BS cell.
2. Cause
SDCCH utilization rate is <10% (the 10% threshold can be
customized).
3. Handling method
i.
View the performance statistics of 5-minute granularity to find out
the moment when there is no traffic in the cell.
ii. In the background, view the history alarm from the moment when
there is no traffic and the current alarm.
iii. View the statuses of channel, FU, CU and cell from dynamic data
management at the background.
iv. If there is no current alarm and the statuses of channel, FU, CU
and cell are normal, do as follows:
¾
Trace signaling of the cell at the background to observe whether
there is any message and the details of the message.
¾
Block/unblock the cell, FU, CU and channel to observe whether
there is any traffic.
¾
If there is no traffic, reset ETRM to observe whether there is any
traffic.
¾
If there is no traffic, reset CMM (the reset site) to observe whether
there is any traffic.
¾
If there is no traffic, changeover the BCCH’s TRU (under the no
single carrier condition) to observe whether there is any traffic.
v. In case the above operations at the background do not work,
please go to the BTS equipment room and check intensively.
¾
Use LMT to view the BTS alarm and status.
¾
Lock the frequency point of BCCH TRU to observe whether there is
power and how much it is. If the power is too low, the PA possibly
gets faulty. If there is any power output, observe whether MS can
gain access to the network. If not, the message is wrong or the