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Digital Phone cable

Cable telephony

2016 New Mobile Phone Cables

Cable telephony is a form of digital telephony over cable TV networks. A telephone interface installed at the customer's premises converts analog signals from the customer's in-home wiring to a digital signal, which is then sent over the cable connection to the company's switching center. The signal is then sent on to the public switched telephone network (PSTN). Cable telephone provides another revenue stream for cable television system operators and gives the consumer the convenience of a single bill for combined television, internet and telephone services.

Emergency calls[edit]

The biggest obstacle to cable telephone service is the need for nearly 100% reliable service for emergency calls. PacketCable, one of the emerging standards being developed for digital cable telephony, seems to be the most promising and able to work with the quality of service demands of traditional analog telephone service.

Advantage[edit]

The biggest advantage to digital cable telephone service is similar to the advantage of digital cable television, namely that data can be compressed, resulting in much less bandwidth used than a dedicated analog circuit-switched service. Other advantages include better voice quality and perhaps future integration to a VoIP network providing cheap or unlimited nationwide and international calling. In most cases, digital cable telephone service is separate from broadband Internet access service being offered by many cable companies and does not rely on IP traffic or the Internet.

Disadvantage[edit]

One possible disadvantage to digital cable telephone service is similar to a disadvantage of cable Internet access, namely that the medium is shared, which could result in occasional delays and drops when high volumes of bandwidth are used or in some cases shared with entire neighborhoods. These delays could be experienced during the "prime time" parts of the day, when heavy Internet usage and Internet streaming devices can make telephone calls on this system difficult. However, by utilizing Cable Lab's Packet Cable interface specifications, cable operators are able to diminish the effects of heavy internet usage on call quality. This is done by way of QoS provisions present in the Packet Cable specifications.



Avaya Avaya 9508 IP Phone - Cable - Wall Mountable, Desktop - Charcoal Gray 700504842
CE (Avaya)
  • Compatible with Avaya IP Office R 7.0 and Avaya IP Office R 7.0 Partner Version
  • Full Duplex Speakerphone
  • 8 line x 32 Character White Backlit Display
  • 8 Programmable Buttons X 3 pages for a total of 24 buttons
  • Up to 100 Contacts / Icon Buttons
Avaya Avaya 9508 IP Phone - Cable - Wall Mountable, Desktop - Charcoal Gray 700504842
CE (Avaya)
  • Compatible with Avaya IP Office R 7.0 and Avaya IP Office R 7.0 Partner Version
  • Full Duplex Speakerphone
  • 8 line x 32 Character White Backlit Display
  • 8 Programmable Buttons X 3 pages for a total of 24 buttons
  • Up to 100 Contacts / Icon Buttons
GN Netcom Jabra Biz 1925 Headset Bundle - Headset, Telephone Cable | RJ9 Phones, VoIP, IP, Digital: Cisco, Mitel, ShoreTel, Aastra, Toshiba, Nortel, Yealink
Office Product (GN Netcom)
  • BUNDLE OF 2 ITEMS: Jabra BIZ1925 Duo Headset, Ergonomic Telephone Interface cable
  • UPGRADED CABLE CONNECTORS: Quick Disconnect - Allows for easy disconnect from phone without removing headset. Less strain and fatigue to hands and fingers with easy...
  • EASY PLUG-IN TO PHONE: Connects directly into phone s headset jack (RJ-9/RJ-22 type). Soft leatherette ear pads for greater comfort.
  • JABRA QUALITY MICROPHONE: Noise-canceling microphone filters out background noise
  • SMART CONNECTING CORD INCLUDED WITH HEADSET: Low-cost, affordable, commercial-grade headset - works with virtually any office phone with a headset port (RJ-9/RJ-22)
topAlert HY-016 LCD Emergency Survival Solar Hand Crank Self Powered AM/FM/WB(NOAA) Digital Radio, Flashlight, Smartphone Charger with Adaptors & Cables
CE (topAlert)
  • This must have emergency survival toolkit digital LCD radio comes with an AM/FM/WB(NOAA) 7 weather bands, a powerful 3 LED flashlight, cell phone charger with cables...
  • Very compact, light, and easy to carry yet loaded with many important functions which are a must have for any survival kit.
  • Multiple ways to power/charge the radio: hand crank to wind up internal alternator, expose to sunlight to charge by solar panel, DC recharge by connecting the mini...
  • This radio is an improvement from other crank chargers, you can fully charge this radio though the USB/AC/DC, solar panel, or hand crank and then when you need it...
  • High quality rubberized housing is waterproof and it is ideal for hiking, camping, stored in a car trunk, or any emergency kit.
short usb cable, OKRAY 10 Pack Colorful Micro USB 2.0 Charging Data Sync Cable Cord for Samsung, Android Phone and Tablet, Nexus, HTC, Nokia, LG, Sony, Many Digital Cameras-0.66ft (7.87 Inch)
Wireless (OKRAY)
  • Perfect fit for Samsung Galaxy S2 S3 S4,Galaxy Note 2 4,Galaxy Nexus,HTC M8 One X One S,ensation G14,ThunderBolt, Nokia N9 Lumia 920 900,LG,Sony Experia,All Android...
  • Charge & sync your phone or device using the short micro USB connector on cable and plug the USB Type A connector into a laptop, desktop, power bank, or USB...
  • 10 colorful cables with low price,you could use the charging cable in the car,office,home with different color cable as your mood



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