Cellular Network Infrastructure » OsmoMGW

in protocol.c: send_dummy() is called from handle_create_con(). This generates the early dummy packet. Its indeed odd. It would only make sense for CRCX requests that already include the remote address, otherwise we should be silent, the next chance to send the dummy packet would be the MDCX then.

In some cases (BSC CN-side), we already know the remote during CRCX, and we don't use MDCX there. So in that case it makes sense to send the dummy packet at the same time when we send the CRCX ACK, not matter if found before or after the CRCX ACK by the MGCP client.