Figure 4-11 Confirm Dialog Box - Huawei BTS3900 GSM Commissioning Manual

4 Commissioning the BTS (Transmission Available)
2.
3.
4.
Step 5 Disconnect the BTSs in ring topology manually, and check the automatic switchover of BTSs
in ring topology. When the physical connection between BTSs in ring topology is disconnected,
the lower-level BTS at the disconnected point works in the reverse link, and the upper-level BTS
works in the forward link.
1.
2.
4-10

Figure 4-11 Confirm dialog box

ClickYes, the Switchover Success dialog box is displayed. The level 2 BTS and level 3
BTS reset automatically.
After the level 2 and level 3 BTS are reset, query the information about the ring topology
of the level 2 and level 3 BTSs.
successfully connected in the reverse direction, and the working port is changed from port
0 to port 1. You can infer that the BTS can perform the switchover from the forward ring
port to the reverse ring port.
Figure 4-12 Result of the ring topology switchover (1)
On the BTS side, disconnect the transmission cable between the level 1 BTS and level 2
BTS. The level 2 BTS resets automatically.
After the reset of the level 2 BTS is complete, see
about ring topology. Figure 4-13
BTS is changed from port 0 to port 1. You can infer that the automatic switchover of the
lower-level BTS is complete.
Figure 4-13 Result of the ring topology switchover (2)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Figure 4-12 shows the query result. The level 3 BTS is
Step 2 and
shows the query result. The working port of the level 2
BTS3900(A) GSM
Commissioning Guide
Step 3 to query the information
Issue 02 (2009-04-20)