Protocol Specification
Version 2.2+
Version 2.2+

DIAL Specification (Version 2.2.1)

DIAL Specification (Version 2.2)
Version 2.1
Version 2.1

DIAL Specification (Version 2.1)
Version 2.0+
Version 2.0+

DIAL Specification (Version 2.0.1)

DIAL Specification (Version 2.0)
Version 1.7+
Version 1.7+

DIAL Specification (Version 1.7.2)

DIAL Specification (Version 1.7.1)

DIAL Specification (Version 1.7)