Sends a single message over a connection.

    On Alpha and Integrity server systems, this service accepts 64-
    bit addresses.

    Format

      SYS$ICC_TRANSMIT  conn_handle ,ios_icc ,[astadr] ,[astprm]

                        ,send_buf ,send_len

    C Prototype

      sys$icc_transmit  (unsigned int conn_handle, struct _ios_icc

                        *ios_icc, void (*astadr)(__unknown_params),

                        __int64 astprm, char *send_buf, unsigned int

                        send_len);