Sheet1

CSSR Is Degraded?Immediate Assignment Is degraded?SDCCH Drop Is Degraded?TCH Assignment Is degraded?SDCCH is congested?1.Check Immediate Assignment Per TRX for the TRXs that contains SDCCH.

2.Check the DL/UL Quality for the TRX that contains the SDCCH Channel.

3.Check Unbalance, Alarms and Main/Diversity difference to make sure no HW Issue

1. Check if Number of SDCCH Timeslots is Missing?

2.Check if Dynamic SDCCH Feature is activated? SDDYN

3.Check SDCCH Availability.

4.Check Sudden increase in Channel Requests.

5.Check LAU PercentageSDCCH Drop analysis is similar to TCH Drop analysis:

1.Check Interference possibility.2.Check HW Issue Possibility.3.Check Transmission Issues Possibility4.Check External Interference issues.5.Check Coverage Issues

TCH is congested?1.Check TCH Assignment per TRX.2.Check if the assignment failure is caused by Quality or Hardware Issue.3.Check Interference possibility , Transmission instability, Hardware Alarms ..etc

1. Check if Traffic increased Suddenly.2.Check TCH Utilizatio Rate.3.Check if HR is activated.4.Check TRX Availability5.check Comgestion on other interfaces.