Conventions Used in This Book

The following formatting conventions are used throughout this book:

  • Italic is used for commands, filenames, directories, functions, threads, and operators.

  • Constant width is used for IP addresses, branches in a SIP message flow, and equations.

  • Constant width italic is used for replaceable text.

  • Constant width bold is used for user input.

Tip

This icon designates a note, which is an important aside to the nearby text.

Warning

This icon designates a warning relating to the nearby text.

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