Here’s a good call flow for VoLTE:
Note: you can find this and other flow in the blog listed in our Resources page Blogs/Docs from COMPANIES
Also here is a good picture with callflow for VoLTE with all IMS elements involved:
Related Topics
| Topic | Replies | Views | Activity | |
|---|---|---|---|---|
| When default bearer of IMS signaling is released in VoLTE call? | 35 | 6939 | February 18, 2024 | |
| If network send RRC connection release abnormally will UE send bye SIP message? | 13 | 2565 | October 1, 2023 | |
| VoLTE block call due to SIP 500 Internal server error | 3 | 2316 | June 2, 2023 | |
| Drop Call when moving from VoLTE site to LTE site | 11 | 703 | September 30, 2023 | |
| During VoLTE call how dedicated bearer will active and who is responsible for create dedicated bearer? | 4 | 2026 | December 6, 2023 | |
| How network tell UE that VoLTE is configured? | 8 | 3256 | December 28, 2021 | |
| B part is latched on 4G, but still fall backs to CSFB when call is received | 9 | 86 | August 25, 2024 | |
| How SIP drop call rate is calculated? | 21 | 5416 | May 27, 2021 | |
| VoLTE Call Drop RF related reasons | 1 | 3288 | March 6, 2021 | |
| When VoLTE Call (QCI1-2-5) and Data Session (QCI6-9) established in LTE, at which point allocation of QCI done? | 8 | 5394 | March 24, 2022 |