To achieve this,an SDN controller sends a binding request to an SDN switch to propose that a header field identifier be dynamically associated with a header field type.

Per [RFC3864], the "Received-SPF:" header field is added to the IANA Permanent Message Header Field Registry.

Per [RFC3864], the "Received-SPF:" header field is added to the IANA "Permanent Message Header Field Names" registry.

The modulator modulates the header data sequence using S-QPSK modulation to generate the header field of the PPDU.

In a header compressor (28), a header field value is applied to a modulo X operator (101) which can, for example, divide the header field value by a value X, and output the remainder.

Any header field not defined as '*text' should be parsed according to the syntax rules for that header field.

Furthermore, the second header field is transferred into a third header field using a compression method, a second communication message being formed by this third header field and the application data field.

(2) Any header field not defined as '*text' should be parsed according to the syntax rules for that header field.

The specified audit partition region has an audit header field (28) and an audit buffer field (30).

The invention concerns an asynchronous cell switching system comprising each a header field and a data field.

The mark is part of an enforceable anti-spam email header field comprising a field name and a field body.

The searches use a header field for a different protocol layer.

Each packet data is proceeded by a header field for identifying the remote station.

In addition, the type header field of the GMH may be shortened or removed.

If the Upgrade header field is specified, then the sender MUST also send the Connection header field with the upgrade option specified.