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BTS TRXs on BL-RSL

I got a critical ticket on a site this morning.

Problem:

All TRX are in BL-RSL state

Solution:

Tested circuit with telco and found that the T1 has a loop left out.

Tech from telco normalized T1.

All TRX came to WO state one by one.

Conclusion:

This is is a working T1 circuit and was rewired on the demarc and probably the Tech called for testing and the loop was left up. Before touching the circuit path let telco test their side first before isolating the T1 towards you. This will prevent tampering existing and working path.

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