Feature #1597
openExternal interface for USSD
80%
Description
we already have SMPP for SMS, but don't have similar functionality for USSD, i.e. a way in which external applications can exchange USSD with MSs.
There are some provisions for USSD in SMPP, but I think they don't really appreciate the session-oriented nature of USSD.
In either case, I'm not aware of any standard to hand USSD to external applications. Of course there's MAP, but nobody wants to implement that in an external application...
Files
Checklist
- Processing / forwarding of the Cause IE in GSM 04.80 RELEASE COMPLETE message
- Processing of SS Version IE in MO GSM 04.80 REGISTER message
Related issues
Updated by fixeria about 6 years ago
- Status changed from New to In Progress
- % Done changed from 0 to 20
First of all, we need to extend GSUP with USSD support.
Updated by fixeria about 6 years ago
- Tracker changed from Bug to Feature
- % Done changed from 20 to 50
Updated by fixeria about 6 years ago
If anyone has and/or can record LAPDm traces of USSD sessions with a commercial
network or even MAP traces, I would be more than happy.
There is a sample capture:
but one is too trivial...
Updated by fixeria about 6 years ago
Oh, WOW! I've just found a MAP trace with lots of USSD sessions.
https://telestax.com/blog/telscale-ussd-gateway-achieves-700-ussd-messagessec/
This is exactly from where I took the pictures above.
Updated by laforge about 6 years ago
- Related to Feature #2931: USSD test cases in TTCN-3 added
Updated by fixeria about 6 years ago
- File ussd_ms_init.png ussd_ms_init.png added
- File ussd_net_init.png ussd_net_init.png added
- File ussd.xml ussd.xml added
I've visualized some possible USSD-session examples...
The images are created using https://draw.io, and can be opened
and edited (source XML attached) there.
Updated by fixeria almost 6 years ago
- Status changed from In Progress to Feedback
- % Done changed from 50 to 90
The new changes which implement support of both MS-initiated and network-initiated
SS/USSD transactions have been send to review:
https://gerrit.osmocom.org/9658/
https://gerrit.osmocom.org/9661/
The only missing part at the moment is notification about errors,
e.g. when Paging of a subscriber is failed, or when a message decoding is failed.
Updated by fixeria almost 6 years ago
- % Done changed from 90 to 80
What would be also great to implement:
- processing / forwarding of the Cause IE in GSM 04.80 RELEASE COMPLETE message
- processing of SS Version IE in MO GSM 04.80 REGISTER message
Updated by laforge over 5 years ago
- Related to Feature #3433: External interface for USSD added
Updated by fixeria over 5 years ago
- Checklist item Processing / forwarding of the Cause IE in GSM 04.80 RELEASE COMPLETE message added
- Checklist item Processing of SS Version IE in MO GSM 04.80 REGISTER message added
- Priority changed from Normal to Low