Analog Line
Analog Line
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| NEW ITW LINX MCO8 110 ANALOG STATION SET AND CENTRAL OFFICE LINE PROTECTION | |
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$59.30 Time Remaining: 2h 19m Buy It Now for only: $59.30 Buy It Now |
| LUCENT AVAYA TN2215 ANALOG ANALOGUE LINE CARD 16 PORT | |
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$103.61 Time Remaining: 10h 39m Buy It Now for only: $103.61 Buy It Now |
| Comdial DX 80 7200 00 KSU 4 Lines x 8 Ext x 4 Analog | |
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$424.99 Time Remaining: 14h 4m Buy It Now for only: $424.99 Buy It Now |
| ET 4000 4 Line Analog Corded Phones | |
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$22.00 Time Remaining: 14h 6m |
| Silver Wilon Radial Line Pattern Women Stainless Steel Analog Quartz Wrist Watch | |
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$0.99 Time Remaining: 14h 43m |
| NEW BURTON ANALOG MENS B LINE POLO SHIRT TEE LARGE | |
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| 2011 BURTON ANALOG MENS B LINE POLO SHIRT TEE LARGE | |
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$39.99 Time Remaining: 16h 1m Buy It Now for only: $39.99 Buy It Now |
| 3COM NBX100 KSU with a NBX Uplink Card 3C10370 and two NBX Analog Line Card | |
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$249.99 Time Remaining: 16h 38m Buy It Now for only: $249.99 Buy It Now |
| Polycom SoundStation Conference Speaker Phone +90d Wnty Analog Home Bus Lines | |
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$189.00 Time Remaining: 16h 54m Buy It Now for only: $189.00 Buy It Now |
| Polycom SoundStation EX with 2 EX Microphones +90d Wnty Analog Home Bus Lines | |
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$299.00 Time Remaining: 16h 54m Buy It Now for only: $299.00 Buy It Now |
| Polycom SoundStation Premier EX w mics +3 mo Warranty Analog Home Bus Lines | |
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$379.00 Time Remaining: 16h 54m Buy It Now for only: $379.00 Buy It Now |
| 3Com NBX V3000 Analog Platform 3c10600b + 5 multi line 3c10402b telephones | |
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$899.00 Time Remaining: 17h 34m Buy It Now for only: $1,100.00 Buy It Now | Bid now |
| Lucent Avaya ATT Definity TN746B v6 Analog Line Card | |
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$19.95 Time Remaining: 17h 51m |
| Nortel Meridian Analog Message Waiting Line Rise 05 NT8D09BA Card Untested | |
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$40.00 Time Remaining: 18h 31m Buy It Now for only: $40.00 Buy It Now |
| Viking Desk Wall 24 Analog Line Station Visual Status Monitor Scanner w Display | |
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$399.95 Time Remaining: 19h 34m Buy It Now for only: $399.95 Buy It Now |
| Viking 12V DC Desk Wall Mountable Loop+Ring Detect Board for Analog Phone Line | |
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| Viking Loop+Ring Detector Monitor Board w Power Adapter for Analog Phone Line | |
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| NEW Viking Single Analog Line Loud 4 Tone Ringer Door Chime Bell w Volume Knob | |
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$112.95 Time Remaining: 19h 38m Buy It Now for only: $112.95 Buy It Now |
| ATT TN746B V3 Analog Line | |
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$10.00 Time Remaining: 19h 50m Buy It Now for only: $11.00 Buy It Now | Bid now |
| Gorgeous MAIN LINE TIME LADIES SAPPHIRE Rhinestone STUDDED Analog Wristwatch | |
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$29.99 Time Remaining: 19h 52m |
| NEC PN 4LCD A NEAX 2000 IVS Analog Line Card 150216 | |
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$69.99 Time Remaining: 21h 4m Buy It Now for only: $69.99 Buy It Now |
| LINE 6 TONECORE SPACE CHORUS ANALOG GUITAR PEDAL NEW | |
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$119.99 Time Remaining: 21h 36m Buy It Now for only: $119.99 Buy It Now |
| Refurbished Comdial DX 80 KSU 4 CO Lines 8 Digital Expansions 4 Analog Ports | |
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$150.00 Time Remaining: 1d 1h 16m Buy It Now for only: $250.00 Buy It Now | Bid now |
| AASTRA 470 SINGLE LINE ANALOG SPEAKERPHONE WITH MUTE44 LARGE 8 LINE BACKLIT | |
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$109.16 Time Remaining: 1d 3h 19m Buy It Now for only: $109.16 Buy It Now |
| AASTRA 480E SINGLE LINE ANALOG SPEAKERPHONE WITH MUTE44 LARGE 8 LINE BACKLIT | |
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$137.92 Time Remaining: 1d 3h 19m Buy It Now for only: $137.92 Buy It Now |
| Lot of 5 Avaya Lucent Definity TN2215 Analog Line | |
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$340.31 Time Remaining: 1d 3h 27m Buy It Now for only: $340.31 Buy It Now |
| LAB LINE HOYT D1255819321 ANALOG RPM METER TACHOMETER | |
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$99.00 Time Remaining: 1d 4h 14m Buy It Now for only: $99.00 Buy It Now |
| EST EDWARDS Small Analog Series Dual Line Dialer SA DACT | |
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$149.99 Time Remaining: 1d 9h 53m Buy It Now for only: $149.99 Buy It Now |
| PSTU2 TOSHIBA 424280DK16DK40 8 CCTS ANALOG STATION LINE CARD | |
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$80.00 Time Remaining: 1d 9h 56m |
| ATT TN742 ANALOG LINE V17 | |
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$9.99 Time Remaining: 1d 11h 42m Buy It Now for only: $9.99 Buy It Now |
| Lucent TN793 Analog LINE V6 Card | |
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$50.00 Time Remaining: 1d 13h 8m Buy It Now for only: $50.00 Buy It Now |
| Genuine Avaya TN793B Analog Line V2 | |
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$99.00 Time Remaining: 1d 13h 35m Buy It Now for only: $99.00 Buy It Now |
| AVAYA TN793 ANALOG LINE V6 | |
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$189.00 Time Remaining: 1d 13h 37m Buy It Now for only: $189.00 Buy It Now |
| AVAYA TN793 ANALOG LINE V5 | |
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$189.00 Time Remaining: 1d 13h 47m Buy It Now for only: $189.00 Buy It Now |
| Nortel Meridian Anlg LC NT8D03AB Rlse 07 Analog Line Card | |
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$59.00 Time Remaining: 1d 15h 37m Buy It Now for only: $59.00 Buy It Now |
| Symetrix TI 101 Broadcast Radio Analog Hybrid Phone Line Console Mixer Interface | |
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$229.00 Time Remaining: 1d 17h 3m Buy It Now for only: $229.00 Buy It Now |
| 260 PCS P N B2136 ADSL LINE TRANSFORMERS For Analog Devices PE B2136 | |
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$9.99 Time Remaining: 1d 17h 7m |
| Lot 2x Nortel NT8D09AL Analog M WLC Rise 04 Meridian 1 Message Waiting Line Card | |
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$71.99 Time Remaining: 1d 18h 6m |
| Nortel Meridian NT8D09AL Analog Line Card REL 4 USED Original box | |
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$45.00 Time Remaining: 1d 21h 42m Buy It Now for only: $45.00 Buy It Now |
| NEW Mackie VLZ3 1202 12 Channel Analog Mic Line Mixer | |
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$269.99 Time Remaining: 1d 22h 32m Buy It Now for only: $269.99 Buy It Now |
| NEW Mackie 802 VLZ3 8 Channel Analog Mic Line Mixer | |
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$199.99 Time Remaining: 1d 22h 37m Buy It Now for only: $199.99 Buy It Now |
| PANASONIC KXTA82483 3 PORT ANALOG CO LINE AND 8 PORT HYBRID | |
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$304.00 Time Remaining: 2d 41m Buy It Now for only: $304.00 Buy It Now |
| SAMSUNG OPTO ELECTRONICS SCD 2010 ANALOG DOME 1 3 SUPER HAD CCD 600TV LINE | |
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$121.00 Time Remaining: 2d 55m Buy It Now for only: $121.00 Buy It Now |
| SAMSUNG OPTO ELECTRONICS SCD 2080R ANALOG IR DOME 1 4 SUPER HAD 600TV LINE | |
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$226.00 Time Remaining: 2d 56m Buy It Now for only: $226.00 Buy It Now |
| PANASONIC KXTA82481 2 PORT ANALOG CO LINE AND 8 PORT HYBRID | |
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$279.00 Time Remaining: 2d 56m Buy It Now for only: $279.00 Buy It Now |
| Avaya Lucent ATT Definity TN746B V6 Analog Line Card | |
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$19.00 Time Remaining: 2d 5h 30m Buy It Now for only: $19.00 Buy It Now |
| Avaya Lucent ATT Definity TN746B V4 Analog Line Card | |
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$19.00 Time Remaining: 2d 5h 38m Buy It Now for only: $19.00 Buy It Now |
| Avaya Lucent ATT Definity TN746B V7 Analog Line Card | |
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$19.00 Time Remaining: 2d 9h 29m Buy It Now for only: $19.00 Buy It Now |
| Nortel NT8D09AL Meridian 16 Port Analog Message Waiting Line Card Rise 4 | |
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$24.95 Time Remaining: 2d 9h 59m Buy It Now for only: $24.95 Buy It Now |
| RED LINE Compressor Analog Round Watch Black Rubber Band | |
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$73.99 Time Remaining: 2d 11h 50m Buy It Now for only: $82.99 Buy It Now | Bid now |
| 1978 ELECTRO HARMONIX DELUXE MEMORY MAN ECHO ANALOG DELAY LINE PRINT ADVERT | |
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$7.99 Time Remaining: 2d 12h 16m Buy It Now for only: $8.99 Buy It Now | Bid now |
| Radio Systems TI 101 Analog Hybrid Phone Line Broadcast Mixer Interface Symetrix | |
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$256.68 Time Remaining: 2d 12h 53m Buy It Now for only: $256.68 Buy It Now |
| Lucent SN229B PBX On Premise Analog 8 Port Line Card | |
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$49.95 Time Remaining: 2d 12h 54m Buy It Now for only: $49.95 Buy It Now |
| Avaya TN742 V18 PBX Analog Line Card Refurbished | |
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$9.95 Time Remaining: 2d 13h 14m Buy It Now for only: $9.95 Buy It Now |
| Aastra 9316CW Single Line Analog Telephone | |
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$40.00 Time Remaining: 2d 13h 15m Buy It Now for only: $40.00 Buy It Now |
| 1 Nortel Meridian NT8D09BA 16 Port Analog Line Card for Option 11 | |
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$120.00 Time Remaining: 2d 14h 32m Buy It Now for only: $120.00 Buy It Now |
| NEW QTY Aastra Model 470 A1261 0000 10 00 Single Line Analog Screen Phone PT470 | |
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$70.00 Time Remaining: 2d 16h 33m Buy It Now for only: $70.00 Buy It Now |
| Avaya IPOffice Small Office Edition 4 Lines 4 Analog ext 8DS 3 voip 700350424 | |
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$350.00 Time Remaining: 2d 16h 39m Buy It Now for only: $350.00 Buy It Now |
| 3COM NBX MODULE 4 PORTS ANALOG LINE CARD 3C10114 | |
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$422.93 Time Remaining: 2d 17h 18m Buy It Now for only: $422.93 Buy It Now |
| SIEMENS TIEL4 ANALOG TIE LINE I FCARD | |
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$40.00 Time Remaining: 2d 17h 31m Buy It Now for only: $40.00 Buy It Now |
| Meridian 9316CW Single Line Analog Phone AO659641 with FAXorModem Jack EXCELLENT | |
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| SEAHOPE LASV LINES ANALOG WATCH TELL US HOW 2 WIN UR BIZ | |
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$120.00 Time Remaining: 2d 18h 14m |
| NEW ANALOG ARRAIGN RIDEABLE SHIRT TOP DWR LINED INDIGO MENS XL 2012 FAST SHIP | |
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$59.99 Time Remaining: 2d 18h 57m Buy It Now for only: $59.99 Buy It Now |
| NIKE D LINE BIG AL BLACK ANALOG WATCH | |
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$90.00 Time Remaining: 2d 19h 11m Buy It Now for only: $90.00 Buy It Now |
| NIKE D LINE BIG AL SILVER ORANGE ANALOG WATCH | |
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$90.00 Time Remaining: 2d 19h 15m Buy It Now for only: $90.00 Buy It Now |
| NIKE D LINE BIG AL MATTE BLACK RED ANALOG WATCH | |
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$90.00 Time Remaining: 2d 19h 20m Buy It Now for only: $90.00 Buy It Now |
| AVAYA TN793B 108551755 ANALOG LINE BOARD PCB | |
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$199.99 Time Remaining: 2d 20h 1m Buy It Now for only: $199.99 Buy It Now |
| Loud ringing from an analog line Connect via screw ter | |
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$59.99 Time Remaining: 2d 21h 30m Buy It Now for only: $66.00 Buy It Now | Bid now |
| Wheelock single analog phone line telestrobe Emits a h | |
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$77.79 Time Remaining: 2d 21h 31m Buy It Now for only: $85.58 Buy It Now | Bid now |
| Visual status for up to 24 analog lines or stations id | |
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$206.59 Time Remaining: 2d 21h 31m Buy It Now for only: $227.26 Buy It Now | Bid now |
| NEC DTR 1HM 1 Single line analog telephone Flash redia | |
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$55.79 Time Remaining: 2d 21h 31m Buy It Now for only: $61.38 Buy It Now | Bid now |
| NEC DTR 1 1 Single line analog telephone Flash redial | |
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$35.39 Time Remaining: 2d 21h 32m Buy It Now for only: $38.94 Buy It Now | Bid now |
| Bogen Analog door phone Telephone line powered Hands | |
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$185.19 Time Remaining: 2d 21h 32m Buy It Now for only: $203.72 Buy It Now | Bid now |
| REF RCA ViSYS 2 line analog set black 25203RE1 w power supply and new cords desi | |
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$35.00 Time Remaining: 2d 23h 31m Buy It Now for only: $35.00 Buy It Now |
| Avaya MM711 VH25 8 Port Analog Line Module 700315575 | |
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$759.00 Time Remaining: 3d 6h 21m Buy It Now for only: $759.00 Buy It Now |
| Gentner SPH10 Analog Hybrid Broadcast Phone Line Audio Console Interface SPH 10 | |
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$339.00 Time Remaining: 3d 11h 6m Buy It Now for only: $339.00 Buy It Now |
| Lot 10 Analog Devices SSM2142 Audio Balanced Line Driver IC | |
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$9.73 Time Remaining: 3d 12h 13m Buy It Now for only: $9.73 Buy It Now |
| Avaya Lucent ATT Analog Line TN746B V16 106361421 ATT | |
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$49.99 Time Remaining: 3d 13h 27m Buy It Now for only: $49.99 Buy It Now |
What's the difference between telephone line and subscriber line?
A book says a telephone line normally has a bandwidth of 3kHz and the highest bit rate for a telephone line is 34.860kbps(using shannon formula).
It also says the bandwidth of a subscriber line is 4kHz and the upper bit rate can be up to 56kbps(using a sophisticated modem to change the digital signal to analog).
I don't know why the upper bit rate is 56kbps.How to calculate it?
First you are mixing apples and oranges.
A true Modem uses a plain old telephone service line. PoTS
They download at speeds limited by the FCC to 53Kb/s. They upload at 33Kb/s <-- here's your Shannon Formula limit in practice.
A subscriber line is what DSL uses. Digital Subscriber Line.
The things people use for Cable, DSL, FiOS, or Satellite Internet access are not Modems. They do NOT MOdulate or DEModulate. That is the definition of MODEM, it must MOdulate and DEModulate, which is converting a digital signal to an analog one, and vice-versa. They are physical network bridges. They bridge a digital signal from Ethernet or USB; to Cable, DSL, or Satellite maintaining the digital format of the original signal.
Digital Vs Analog Resolution - Pixels Vs TVL (TV Lines) Explained
One of the most confusing and difficult topics in the CCTV world is resolution. Most of us have digital cameras or video camcorders and have heard the term megapixel used as the most common comparison in resolution between various makes and models. We are also aware that a larger number means better picture quality, but many people do not know why. In the CCTV security camera world, though, most cameras are still analog and their resolution is measured differently from what we are used to. This is slowly changing, but there is still a need for these terms and technologies to be understood by anyone involved in the industry.
Analog Resolution
When measuring analog resolution, a TV line does not have a defined number of individual pixels. Instead, the phrase "TV lines" refers to the number of discernible horizontal or vertical lines on the screen. Analog security cameras are measured in Analog TV Lines, and most of them have between 420 and 580, with a few brands claiming to produce cameras with 630+ TVL. The higher number of TV Lines, the more information captured, and thus the higher resolution and detail in the picture. These types of cameras connect to a security DVR or CCTV VCR, via coaxial video cable, that allows the signal to be recorded and played back later or transferred over the internet..
Digital Resolution
A pixel is the smallest element of a digital image. We have all zoomed too far into a picture from a website and seen the image go from clear to a bunch of colored squares - each one of those squares is an individual pixel. Graphics or images like this can have different resolutions, just like monitors and cameras, and the artists often create work at much higher resolutions than monitors can handle, just so they can be zoomed in or out on without distortion. The most common computer monitor resolutions are 1024x768 and 1280x1024 pixels. Digital point and click cameras like the ones you take pictures of your kids with are usually between 5 and 8 megapixels. Common digital security cameras usually boast a megapixel resolution of between 2 and 3. A megapixel (MP) is 1 million pixels, and is a specific measurement for digital resolution that encompasses the area of the output video (height x width).
Example: If a camera outputs a signal that is 1280x1024 pixels (a standard PC monitor's resolution), it is shooting at a megapixel resolution of 1280 x 1024 = 1,310,720 pixels = 1.3 Megapixels (MP).
The most common type of digital security cameras are IP Cameras. These, like your digital camera at home, use strictly digital resolution. They utilize a network connection to either act as a standalone device or connect to a network-based DVR (Digital Video Recorder) or NVR (Network Video Recorder). IP Cameras have fixed resolutions and are now approaching, and in several cases exceeding, 1 megapixel in resolution, on average. Many of these cameras also support POE (Power Over Ethernet), which allows them to be powered by the Ethernet cable used for network connectivity, and PTZ (Pan Tilt Zoom), allowing for remote control of the pan, tilt and zoom features, if applicable.
More and more industry installers and professionals are moving to network-based CCTV equipment because of the flexibility and expandability that it allows. Massive remotely-viewable security camera infrastructures are replacing old, out dated analog systems at an increasing rate and will soon become the preferred industry solution.
About the Author
John Hough is a professional lab technician for
ApexCCTV Security Cameras & DVRs
, where he builds world-class security systems & provides unparalleled technical support to their clients. Browse their selection of
Security Cameras
Read More @
The CCTV Blog
Line 6 Distortion Modeler v Analog Originals
