Ad blocker interference detected!
Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers
Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.
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.