Failures in cobbling together a USSD Gateway

nickvsnetworking · February 13, 2023, 11:48am

Hello Experts.

A few weeks ago I started a weekend project to build a USSD Gateway for IMS / VoLTE, and it didn’t work.

Here’s what I learned in the process!

Adventures in setting up a non-working USSD Gateway for IMS

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mandersen · February 13, 2023, 12:16pm

I am curious. How did you get the 4G phone to send USSD via SIP (instead of CSFB) in the first place ?