A call detail record (CDR) in voice over IP is a file containing information about recent system usage such as the identities of sources (points of origin), the identities of destinations (endpoints), the duration of each call, the amount billed for each call, the total usage time in the billing period, the total free time remaining in the billing period, and the running total charged during the billing period.
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Answer Wiki. Google.com - known as Google Search - is a search engine (like Bing.com and Yahoo.com) that indexes webpages, lets you input a query (e.g. How tall was Abraham Lincoln) and sends you the most relevant webpages. Google Chrome is a web browser (like Firefox, Opera, Internet explorer <- don't use that one - and Microsoft Edge). A web browser lets you visit a webpage by clicking on a link in another webpage, clicking on a shortcut on you desktop (this is like a link) or entering the address into an address bar.