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sergey kostanbaev sergey.kostanbaev at gmail.comYes, initially I thought about using SMPP for USSD. But it looked really complicated since only few external SMPP libraries have support of USSD and most of that few are in C#/Java/etc. Moreover I didn't have any working software for USSD over SMPP to test interoperability with. So I decided to use GPRS SUP socket as a simple transport to send MAP-like messages. Workflow of this SUP is very simple and basically it forwards SS messages with little modifications. On Wed, Nov 25, 2015 at 3:22 PM, Holger Freyther <holger at freyther.de> wrote: > > > On 25 Nov 2015, at 12:03, Sergey.Kostanbaev <sergey.kostanbaev at gmail.com> > wrote: > > > > From: Sergey Kostanbaev <sergey.kostanbaev at gmail.com> > > > > This series of patches add support for external USSD processing via > > simplified MAP-like protocol over SUP socket. As an example of a such > > external application simple USSD to SIP proxy is provided (it targets > > TS 124 390) > > Have you considered using SMPP for USSD? At first this looks more natural > than a custom protocol like SUP. > > holger -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.osmocom.org/pipermail/openbsc/attachments/20151125/5f86e1e2/attachment.htm>