Hello, can you share a bit more details how you exactly process the SMS, like which modules etc..? Also, I would recommend that you use a newer version of kamailio, there are also docker images for version 5.5.x available. Cheers, Henning -- Henning Westerholt – https://skalatan.de/blog/ Kamailio services – https://gilawa.com *From:* sr-users <sr-users-bounces(a)lists.kamailio.org> *On Behalf Of *shigeru ishida *Sent:* Sunday, March 20, 2022 3:16 PM *To:* Kamailio (SER) - Users Mailing List <sr-users(a)lists.kamailio.org> *Subject:* [SR-Users] About SMSC multi-byte support Hi all, I have a little question. I tried SMS over IMS on my smartphones with docker_open5gs (using Kamailio and Open5GS), and the multibyte message (Japanese) was garbled at the recipient smartphone. docker_open5gs URL: https://github.com/herlesupreeth/docker_open5gs Also, docker_open5gs uses Kamailio v5.3. I would be very glad if you could tell me about Kamailio's support for multi-byte SMS. Best regards, --Shigeru