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FlexML Syntax

FlexML, the CarrierX markup language, is used to create instructions for call logic.

The language is much like XML. It consists of special words included into opening and closing tags. Some of the tags are self-closing, i.e., they do not require a closing tag. Some of the tags can contain additional attributes in the start-tag. And some of the tags can nest values and even other tags between opening and closing tags.

The basic components of the markup language are verbs and nouns.

  • FlexML verbs specify what type of action will be performed. Since the instructions are executed from top to bottom, the verbs should be ordered as such. Verbs are modified using supported attributes.
  • FlexML nouns are not used by themselves. They extend FlexML verbs. They are nested inside the verbs (e.g., Dial, Play) and allow the users to specify additional parameters.