NIST Special Publication 800-13

Citation
NIST, Telecommunications Security Guidelines for Telecommunications Management Network (NIST Special Publication 800-13) (Oct. 1995) (full-text).

Overview
The guideline should assist telecommunications vendors in developing systems and service providers in implementing systems with appropriate security for integration into the public switched telephone network. It can also be used by a government agency or a commercial organization to formulate a specific security policy. It does not stipulate regulatory requirements or mandated standards of the National Institute of Standards and Technology.