MERLIN LEGENDCommunications System Release 6.1 | Issue 1 | |
System Planning | August 1998 | |
Glossary |
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AMI | (alternate mark inversion) Line coding format in which a | |
| binary one is represented by a positive or negative pulse, a | |
| binary zero is represented by no line signal, and |
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| subsequent binary ones must alternate in polarity; |
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| otherwise, a bipolar violation occurs. AMI is used in the | |
| DS1 interface. |
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Analog data | See modem data station. |
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station |
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analog multiline | Also known as the MERLIN multiline telephone. A |
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telephone | telephone that transmits and receives analog signals and | |
| has a number of line buttons. |
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analog | Mode of transmission in which information is represented in | |
transmission | continuously variable physical quantities, such as |
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| amplitude, frequency, phase, or resistance. See also |
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| digital transmission. |
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ANI | (Automatic Number Identification) Process of automatically | |
| identifying a caller’s billing number and transmitting that | |
| number from the caller’s local central office to another point | |
| on or off the public network. |
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application | Software and/or hardware that adds functional capabilities | |
| to the system. For example, MERLIN Identifier is an |
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| application that provides caller identification information (if | |
| available in the local area or jurisdiction). |
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ARS | (Automatic Route Selection) System feature that routes | |
| calls on outside facilities according to the number dialed | |
| and line/trunk availability. To initiate ARS, the user dials a | |
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ASCAP | (American Society of Composers, Artists, and Producers) | |
Ascend Pipeline | An |
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25PX/75PX | Internet access over a digital facility. It makes outgoing | |
| calls only. |
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ASN | (AT&T Switched Network) AT&T telecommunications |
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| services provided through an Integrated Digital Services | |
| Network Primary Rate Interface | |
| switched digital service, Megacom, Megacom 800, |
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| Software Defined Network (SDN), Multiquest, and Shared | |
| Access for Switch Services (SASS). |
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asynchronous | A method of transmitting a short bitstream of digital data, | |
data transmission | such as printable characters represented by a 7- or | |
| ASCII code. Each string of data bits is preceded by a start | |
| bit and followed by a stop bit, thus permitting data to be | |
| transmitted at irregular intervals. See also synchronous | |
| data transmission. |
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AT&T Attendant | Application with equipment that connects to one or more | |
| tip/ring extension jacks and automatically answers |
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| incoming calls with a recorded announcement; directs calls | |
| in response to touch tones. |
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