private void SIPNonInviteTransaction_TransactionRequestRetransmit(SIPTransaction sipTransaction,
                                                                   SIPRequest sipRequest, int retransmitNumber)
 {
     NonInviteTransactionRequestRetransmit?.Invoke(sipTransaction, sipRequest, retransmitNumber);
 }
 private void SIPNonInviteTransaction_TransactionRequestReceived(SIPEndPoint localSIPEndPoint,
                                                                 SIPEndPoint remoteEndPoint, SIPTransaction sipTransaction, SIPRequest sipRequest)
 {
     NonInviteRequestReceived?.Invoke(localSIPEndPoint, remoteEndPoint, this, sipRequest);
 }