Add support of the GSUP E Interface messages

Encoding and decoding of the following GSUP messages were added to support inter-MSC handover functionality:
* E Prepare Handover Request/Result/Error
* E Prepare Subsequent Handover Request/Result/Error
* E Send End Signal Request/Result/Error
* E Forward Access Signalling Request
* E Process Access Signalling Request
* E Close, E Abort, E Routing Error.

Tests for GSUP E Interface messages were added from libosmocore library.

4 files changed
tree: e346a6b8d865b173357b8086355c9bf8afb980d4
  1. include/
  2. src/
  3. test/
  4. .gitignore
  5. LICENSE
  6. README
  7. rebar.config
  8. rebar.lock