Hi experts ,
Fast return to LTE after supplementary csfb is taking more than 10 sec whereas after cs call it’s taking only 1 sec .
Smart LTE layering is enabled with all services and all triggers. Any other parameter I am missing here .
In log analysis I can see after ussd signalling end msc sending of end of csfb message but RNC not sending rrc release with redirect and after that ue continue with Rau and lac update
| Topic | Replies | Views | Activity | |
|---|---|---|---|---|
| Fast return to LTE after USSD_ Nokia | 0 | 430 | January 24, 2024 | |
| CSFB and Fast Return | 0 | 2448 | May 7, 2023 | |
| UE taking too much time to return to LTE after CSFB to 3G | 18 | 8286 | November 11, 2024 | |
| Improve CSFB preparation success Rate | 12 | 3944 | June 24, 2020 | |
| CFSB to 2G KPI Ok, but no calls (CFSB not happening) | 26 | 3007 | March 11, 2021 | |
| Fast Return for SRVCC calls in UTRAN based on redirections only | 5 | 862 | October 27, 2024 | |
| UE camping to overshoot cell in 3G after Extended Service Msg | 20 | 1234 | August 31, 2021 | |
| Return from 2G to LTE with packet data off | 3 | 402 | April 15, 2024 | |
| Feature to bring UE back from 4G to 5G | 4 | 465 | October 22, 2024 | |
| 4G CSFB with RIM activated | 2 | 2471 | June 4, 2022 |