Hi Reza,
On Thu, Apr 16, 2020 at 02:42:15PM +0000, Reza Hosseini wrote:
I am writing to ask you please, if it is possible to provide me with documents on the GSUP Client program.
Which particular program are you referring to? libosmo-gsupclient and osmo-gsup-client? They are fully open source, you can study it as much as you want. You can use the library from any other GPL/AGPL licensed program that you want to write yourself.
I have to implement my own application and send the required GSUP messages to the HLR to get subscriber data from hlr in Osmocom.
If that application is GPL/AGPL licensed open source software, you can use libosmo-gsup-client.
If not, you would have to implement the GSUP protocol directly. The protocol is documented in the OsmoHLR user manual.
Regards, Harald