Alcatel Unleashed

Hi,
following scenario:
- A which is an external caller calls B which is an user on the OXE
- B then transfers A to C which is an external user
- is it possible to present the calling number of A to C?
- we also have a RSI Call-Center (Genesys) and an OTSBC (Audiocodes SBC) if this would help with the issue

Not sure. Depends of TG type (ISDN, SIP ...), supported feature (call diversion f.e.), management (ISDN TG private or not, NPD for external forwarding), and provider rules.
In our country if we send via ISDN - Calling number A (not from PBX range) - provider reject this call or replace Calling number (will be used first number from PBX range).