Please Help Urgently Needed with "TS0 TRA Lost" alarm

[mobila179]

Hi Experts;

We've got "TS0 TRA Lost" for many TG on BSC, and they are not stable (raised then disappeared) on RBS6201/BSC. The only description available is:

The speech/data frames from the BSC to the TS are missing or corrupted.
This is probably a fault in the Abis transmission path or in the BSC, for example, no TRA allocated, no connection in Group Switch, and so on.

Anyone have such experience and can provide something (thanks and Rep will be added 4sure)

Thank you all
Mobila179

[consultant]

Hi,
What is the transmission type?
Check common transmission equipement.
Test TS loopback Command RXLTI

BR

[mobila179]

Hi consultant;

Always you to help me :)

Transmission is Mini link 6p connected to RBS via NPU TR3 port (no OVP or ICF)

Thanks


Hi,
What is the transmission type?
Check common transmission equipement.
Test TS loopback Command RXLTI

BR

[consultant]

Hi Mobila,

First of all check transmission path over Mini links,
Second, check RBS event logs and DIP quality logs (DTQUP) on BSC side, than
Check TS0 allocation, as default BCCH is allocated to TS0.


BR