How To Cancel All The Registrations Using A Single Register Message?

1.	How To Cancel All The Registrations Using A Single Register Message?
Answer» The CONTACT header FIELD is equal to * and EXPIRES: 0 The contact header field is equal to * and Expires: 0

Answer»

The CONTACT header FIELD is equal to * and EXPIRES: 0

The contact header field is equal to * and Expires: 0

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