Transcription of Voice over Internet Protocol (VoIP)
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DHS 4300A Sensitive Systems HandbookAttachment Q5 To Handbook v. Voice over Internet Protocol (VoIP) Version December 22, 2014 Protecting the Information that Secures the Homeland DHS 4300A SENSITIVE SYSTEMS HANDBOOK ATTACHMENT Q5 Voice OVER IP This page intentionally blank , December 22, 2014 ii DHS 4300A SENSITIVE SYSTEMS HANDBOOK ATTACHMENT Q5 Voice OVER IP Document Change History Version Date Description HB version December 22, 2014 New document. , December 22, 2014 iii DHS 4300A SENSITIVE SYSTEMS HANDBOOK ATTACHMENT Q5 Voice OVER IP CONTENTS INTRODUCTION.
call session management, voice mail management, directory assistance, and other additional services such as conference bridge. The gateway is connected to telephone service providers’ Public Switched Telephone Networks (PSTN), and is the bridge between the internal VoIP system and general PSTN: all calls to or from outside
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