Configuration files have a simple structure consisting of
two parts: # A stanza is a section of the config file. It starts with a name (or number) surrounded by square brackets . A stanza is also called a context in Asterisk PBX terminology. Stanzas contain one or more ker/valus pairs. A config file will have one or more stanza. Each stanza continues until the next stanza or end of file. # Key/value pairs which set various values such as the ID of the node.
For example ,