Plain old telephone service at&t
POTS stands for Plain Old Telephone Service and it is the basic analog telecommunications service provided by a local telco. Plain Old Telephone Service (POTS) was the only type of telephone service until the 1970s. Plain Old Telephone Service
How It Works
Starting from your home or customer premises, two-pair copper twisted-pair wire runs to your local telco's central office (CO). This copper wire connection forms what is known as the local loop. The CO has switches that connect you to another local subscriber, to another CO, or to a long-distance provider, depending on whether your call is local or long distance. POTS is an inexpensive circuit-switched telecommunications service, but it supports data transfer speeds up to only 56 Kbps. It typically takes 15 to 30 seconds to establish connections for data transfer using modems. POTS Characteristics
Bi-directional ( full duplex) communications. Using balanced signaling of voltage analogs of sound pressure waves on a two-wire copper loops Restricted to a narrow frequency range of 300–3, 300 Hz, called the voiceband, which is much less than the human hearing range of 20–20, 000 Hz Call-progress tones, such as dial tone and ringback tone.
Most CDA's merely look for three sequential tones occurring in less than
3 seconds using a bandpass filter centered around 600 Hz. Loren D. Cahlander of Ensodex, Inc. 4105 North Lexington Ave, Suite 150,
Arden Hills, MN 55129
From the documentation that I have, there are four different sequencesof
tones:
First Tone Second Tone Third Tone
Tone Tone freq length freq length freq length
Name Description (Hz) (10 ms) (Hz) (10 ms) (Hz) (10 ms)
======================================================================
NC No Circuit 985. 2 38. 0 1428. 5 38. 0 1776. 7 38. 0 Found
IC Operator 913. 8 27. 4 1370. 6 27. 4 1776. 0 Intercept
VC Vacant Circuit 985. 0 1370. 0
RO ReOrder 913. 4 1428. 0
Macy Hallock of F M Systems, Inc. 150
Highland Dr. Medina, OH 44256 says:
Period Frequency Designation
SSL LLL IC - Intercept - Vacant No. or AIS or etc. LLL LLL NC - No Circuit (Inter-LATA carrier)
LSL HLL VC - Vacant Code
SLL HLL RO - Reorder Announcement (Inter-LATA Carrier)
LSS LHL #1 - Add'l Reserved Code
SLL LHL RO - Reorder Announcement
SSL HHL #2 - Add'l Reserved Code
LLL LLL NC - No Circuit, Emergency or Trunk Blockage
Where: Period-Duration: S=Short 274 msec L=Long 380 msec
Frequency: L=Low 913.
Plain Old Telephone Service
The Telephone System / Network
aka POTS (Plain Old Telephone Service)
Country codes
Phone Number Directories
Location Data From Phone Number
Country
and Area Codes. Forward and reverse. Partial matches ok. Nice job. See also
North American
Numbering Plan Administration
area code to state list. Area code and exchange to CO list. The "rate center" field more or
less tells you what city the phone number is in. World Telephone Numbering
Guide
Phone line interfaceing
Voice Mail Systems
D. C. Line Voltage (Talk Battery) - 48v with receiver on-hook, red wire (ring)
negative, 5v for off-hook (with 50-1000 ohm d. c. load on line). Tip and ring get their name from the construction of an operator's plug-board
plug -- tip was the tip, and ring was the ring below the tip. The positive
voltage (ground) was put on the tip line, because that was the part of the
plug that the operator had the least chance of touching. Negative battery
supplies (with respect to ground) have always been used with phone systems,
so that leakage currents to ground caused by moisture do not electroplate
away the copper in the wires.
Call Progress Tones in the US (from many sources includeing
Telecom Digest,
Dan Michaels and others
as listed)
Ring: 20-90 vp-p, at 20-40 hz
Dial tone: 350+440Hz Continuous
DTMF Tones - 1 high-band plus 1 low-band sinewave
at frequencies shown in DTMF Table, at max
transmission level of 0 dBm averaged over 3 sec (approx 24. 5v RMS), for minimum
of 50 msec duration and 45 msec interdigit time. Busy:
Busy tone: 480+620Hz 0. 5s ON 0. 5s OFF
Reorder: 480+620Hz 0. 25s ON 0. 25s OFF
Ring back tone:
Most common: 440+480Hz 2. 0s ON 4. 0s OFF (the initial ring on some telephone
exchanges may range from 0. 5s ON to2. 0s ON)
Some PBXs: same frequency, but cadence varies from (1. 0s to 1. 5s ON and 2. 0s
OFF to 3. 5s OFF)
Mitel PBXs (When calling from outside) same frequency, but 0. 5 ON 0. 5 OFF
0. 5 ON 1. 5s off (burr burr burr burr.... )
(Internal calls) 1. 0s ON 3. 0s OFF
SIT (Special Information Tones) tones: the triple tone that you get
when you dial a number that doesn't exist (3 tones, each higher in pitch
than the last) Used by CDA (Call Disposition Analyzers) to differentiate
between human voices and recorded announcements and categorize their type.
POTS provides greater reliability than other telephony systems. Need Plain Old Telephone Service (POTS)? We Offer Plain Old Telephone Service (POTS) for Office Phone Systems and Businesses. POTS provides greater reliability than other telephony systems (mobile phone, VoIP, etc. ). POTS Overview
Plain old telephone service ( POTS) is the voice-grade telephone service that remains the basic form of residential and small business service connection to the telephone network in most parts of the world. The name is a retronym, and is a reflection of the telephone service still available after the advent of more advanced forms of telephony such as ISDN, mobile phones and VoIP. It has been available almost since the introduction of the public telephone system in the late 19th century, in a form mostly unchanged to the normal user despite the introduction of Touch-Tone dialing, electronic telephone exchanges and fiber-optic communication into the public switched telephone network (PSTN). Reliability
While POTS provides limited features, low bandwidth and no mobile capabilities, it provides greater reliability than other telephony systems (mobile phone, VoIP, etc.
Plain Old Telephone Service (POTS): An Introduction
Plain Old Telephone Service | Article about Plain Old Telephone Service by The Free Dictionary
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POTS Definition: Plain Old Telephone Service | Abbreviation Finder
Plain old telephone service at&t
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Plain Old Telephone Service Sample Clauses
Plain Old Telephone Service | Products & Suppliers | Engineering360
finally resulted in the formation of distinct Amish groups: the highly conservative Old Order Amish and the...... middle of paper..... Diener with preaching and teaching the tenants of the Bible. 3. Volliger Armendiener – or Full Deacon helps assists in baptisms and preachings. Common in European communities he is not used very often in American Amish communities. 4. Armendiener – reads the Bible at service and assists the Bishop in his duties. (Nolt 1992, 3). All of the leadership roles technology transforms an ordinary telephone line into a broadband communications link, much like adding express lanes to an existing highway. DSL increases data transmission rates by a factor of twenty or more by sending signals in previously unused high frequencies. DSL technology has added a new twist to the utility of twisted-pair telephone lines. DSL is a family of technologies that provide Internet access by transmitting digital data over the wires of a local telephone network. In telecommunications communicate with each other.
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Also found in: Dictionary, Thesaurus, Acronyms, Wikipedia. (communications) (POTS) The traditional voice service provided
by phone companies, especially when opposed to data services. Note that the acronym POTS is sometimes expanded as "Plain Old
Telephone System" in which sense it is synonymous to Public Switched Telephone Network but used somewhat derogatively. This article is provided by FOLDOC - Free Online Dictionary of Computing ()
References in periodicals archive? Utah's small towns served by the national telecom giant typically suffer from aging switches and lines that were fine for POTS literally, " plain old telephone service ") but which cannot handle the demands of today's high-tech user. A: Plain Old Telephone Service is standard analog telephone lines using a twisted pair of copper wires. Consider plain old telephone service. For decades, regulators have set the price of local telephone service artificially low. It provides end users with high-bandwidth Internet access at speeds of 1.
Today, phone service providers such as Verizon, AT&T, and MCI still offer POTS as a standard service for landline phones. POTS employs the usage of full duplex communication. This means that two devices that are connected are able to communicate with each other in both directions simultaneously. The use of a full duplex telephone allows both parties on a phone to be able to not only speak but be heard. The transaction is made possible due to the channels that are made for communication. The use of call progress tones like the dial and ringback tones are also characteristics of POTS lines. The dial tone alerts the caller that the process is working and that the phone call is ready to begin and a number may be dialed. The ringback tone alerts the call originator that the call is being received. With POTS you are able to have both local and long distance service, along with extensions such as caller ID. POTS could also be used when a computer required dial-up connection to the internet. In short, T1 is considered a transmission line that provides very high speeds.
Implements with Existing Telephone Copper Wires The Data Connect 2178HSEPE is also a Long Reach Ethernet (LRE) Extender provides one RJ-45 Ethernet port and two RJ-11 phone jacks, in which one is for VDSL connection and the other one is for POTS ( Plain Old
Equipment Type: Bridge, Extender / Repeater, Switch
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Smart Computing Article - Watching The World
June 2002 Vol. 6 Issue 6 Page(s) 218-221 in print issue Add To My Personal Library How Web Cameras Can Keep An Eye On Almost Anything Also referred to as POTS ( Plain Old Telephone Service), this type of communication line is used by most homes to transmit data. A common problem with analog phone
PBX Systems (pdf)
PBXs, KSUs, and PABXs contain line cards that support various transmission protocols such as ISDN, T1/E1, HDSL, and ADSL (Figure 3. 46). PBXs also have features such as a POTS ( plain old telephone service) pull-through which allows stations to have outside line access in the event of power failure
Smart Computing Article - How To Share Your DSL Connection
(Digital Subscriber Line) Internet connection as for toys in the sandbox.
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