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2. Call detail record - Wikipedia

   en.wikipedia.org/wiki/Call_detail_record

   A call detail record ( CDR) is a data record produced by a telephone exchange or other telecommunications equipment that documents the details of a telephone call or other telecommunications transactions (e.g., text message) that passes through that facility or device. The record contains various attributes of the call, such as time, duration ...

3. Call logging - Wikipedia

   en.wikipedia.org/wiki/Call_logging

   The goal of the call logging software is to interpret the raw CDR data and produce graphical and summarizing reports. Call logging software packages differ in the sizes of PBX systems that they can support, from hundreds of extensions to hundreds of thousands of extensions. They also differ in the capability of logging specific types of events ...

4. List of telephony terminology - Wikipedia

   en.wikipedia.org/wiki/List_of_telephony_terminology

   ACD - Automatic Call Distribution; Articulation score; B. Blue box - a device that was used to bypass the normal long-distance call switching tones typically used to obtain free calls. C. Call originator - (or calling party, caller or A-party) a person or device that initiates a telephone call by dialling a telephone number.

5. Logarithm - Wikipedia

   en.wikipedia.org/wiki/Logarithm

   Because log(x) is the sum of the terms of the form log(1 + 2 −k) corresponding to those k for which the factor 1 + 2 −k was included in the product P, log(x) may be computed by simple addition, using a table of log(1 + 2 −k) for all k. Any base may be used for the logarithm table. Applications A nautilus shell displaying a logarithmic spiral

6. 911 (emergency telephone number) - Wikipedia

   en.wikipedia.org/wiki/911_(emergency_telephone...

   History. The first use of a national emergency telephone number began in the United Kingdom in 1937 using the number 999, which continues to this day. In the United States, the first 911 service was established by the Alabama Telephone Company and the first call was made in Haleyville, Alabama, in 1968 by Alabama Speaker of the House Rankin Fite and answered by U.S. Representative Tom Bevill.

7. Email Support-AOL Help

   help.aol.com/email-support

   AOL Mail. AOL Desktop Gold. AOL App for iOS. AOL App for Android. Get live expert help with your AOL needs—from email and passwords, technical questions, mobile email and more. Call Live AOL Support at1-800-358-4860. Feedback.