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Answer-seizure Ratio
The answer-seizure ratio (ASR) is a measurement of network quality and call success rates in telecommunication. It is the percentage of answered telephone calls with respect to the total call volume.ITU SG2 Recommendation E.411: International network management - Operational guidance. Definition In telecommunication an attempted call is termed a ''seizure''. The answer-seizure ratio is defined as 100 times the number of answered calls, i.e. the number of seizures resulting in an ''answer'' signal, divided by the total number of seizures: ASR = 100 \ \frac For example, if there were 156 calls dialed of which 62 were successfully connected, then: ASR (%) = (62 uccessful calls/ 156 ialed calls x 100 = 39.74% Busy signals and other call rejections by the telephone network count as call failures. However, the inclusion in the ASR accounting of some failed calls varies in practical applications. This makes the ASR highly dependent on end-user action. Low answer-seizure ratios may b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Telecommunication
Telecommunication, often used in its plural form or abbreviated as telecom, is the transmission of information over a distance using electronic means, typically through cables, radio waves, or other communication technologies. These means of transmission may be divided into communication channels for multiplexing, allowing for a single medium to transmit several concurrent Session (computer science), communication sessions. Long-distance technologies invented during the 20th and 21st centuries generally use electric power, and include the electrical telegraph, telegraph, telephone, television, and radio. Early telecommunication networks used metal wires as the medium for transmitting signals. These networks were used for telegraphy and telephony for many decades. In the first decade of the 20th century, a revolution in wireless communication began with breakthroughs including those made in radio communications by Guglielmo Marconi, who won the 1909 Nobel Prize in Physics. Othe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Busy Signal
A busy signal (or busy tone or engaged tone) in telephony is an audible call-progress tone or audible signal to the calling party that indicates failure to complete the requested connection of that particular telephone call. The busy signal has become less common in the past few decades due to the prevalence of call waiting and voicemail. Reasons for a busy signal An otherwise unspecified busy signal indicates that the called number is occupied: * The called number is talking with another caller on the phone * The number is calling out * Someone else has called the number or is calling the number at the same time * The other line was left off-hook * It is otherwise unavailable The standard busy signal sometimes occurs (sometimes with an intercept message played over the busy) at the end of a call to indicate the other party has hung up (see Disconnect tone), but mostly the off-hook tone is used. In some phone companies in the United Kingdom, the busy signal is played af ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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, completion status, source number, and destination number. It is the automated equivalent of the paper toll tickets that were written and timed by Switchboard operator, operators for long-distance calls in a telephone switchboard, manual telephone exchange. CDR contents A call detail record contains Field (computer science), data fields that describe a specific instance of a telecommunication transaction, but does not include the content of that transaction. By way of simplistic example, a call detail record describing a particular phone call might include the phone numbers of both the calling and receiving parties, the start time, and durati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Average Call Duration
The average call duration (ACD) is a measurement in telecommunications that reflects an average length of telephone calls transmitted on telecommunication networks. It may be calculated by dividing the total length of calls by the number of calls. The measurement is typically based on the reporting by telecommunication equipment via call detail records. Samples are collected to determine traffic demand and forecast call volumes, serving also as a tool for infrastructure monitoring of switches and cables. Depending on the type of call being made, ACD can be used as a proxy measure of call quality. See also * Answer-Seizure Ratio (ASR) * Erlang (unit) * Mean opinion score Mean opinion score (MOS) is a measure used in the domain of Quality of Experience and telecommunications engineering, representing overall quality of a stimulus or system. It is the arithmetic mean over all individual "values on a predefined scale ... (MOS) * Perceptual Evaluation of Speech Quality (PESQ) Ref ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
