Reusing Existing Coax Cabling (EoC) Tutorial

Author: Ethan Ace, Published on Feb 09, 2012

The coaxial cables which transmit most analog CCTV video can be reused when migrating to IP cameras. The technology to do so, most often referred to as Ethernet over Coax (or EoC), is mature and available from a variety of vendors. The challenge is: when should you use EoC and when should you simply pull new UTP cable? In this note, we examine the advantages and disadvantages of re-using coaxial cable.

Advantages

***** *** * ****** ** ********** ** ******* ******** ******. The **** ******** ***** ** ***** ***** ****** ******* *** cable. *******, * ****** ** ***** ******** ***** *** ***** scenarios:

  • ** ******* *****: ***** ***** ** ******* ** *****, ***** ** ** additional ******* ******** ** **** *** *****, ******* *** ********, cable ******** ** ***** *****. ***** ** ** **** ** remove *** ******** *******, ** **** ***-***** *** **** ********* frown **** ********** ******** ****** ****** ** *****.  
  • ****** ************ **** *** **********: ** ****** ****** *** ** ******** **** ** ****** *** online ** **** **** **** ** ***** **** ** **** a *** *** **/* *****.  
  • ******* ****** ** *** **** **********: ** ******** ************* *** ** **********, *******, **** ********, ** cabling ***** *****. ***** ** ** ********* *** ****** ** the ********’* ******** *** ******* ******* *****-**. 
  • ******** ***** ********: ******** ***** *** ***** ** ********* ******* ** * 100 ***** ********, ******* *** *** ** *********, *** ** data ************.  **** **********, ******** ******* ******* *** ******** ** video **** **** **** * ******** **** ** *****.
  • ****** *****: ******* *******, **** **** **** **********, *** **** ******** PoE ***** ** ** ******* ******* *** **** *** * separate ***** ****** ** *** ****** ********.

*************

*******, ***** *** *** ************* ** ******* ******** *****, ** well. *** **** ********* ** **** ********** *** ****** ** each *** *** **** *** ** *********.

  • ***** ********* *****: ******** **** **** ********** ****, ** *******, $***-*** *** ******/**********. Note **** **** ********* ***-***** *** ******** ******** *** ********, which *** ********* *** *********** *** ************ ************, ** **** generally **** *** **** **** ***** *** ******** ** ************ models. ******: *********** *******, * ****** ******* ** *** *** *****, ** ********* for **** **** **** ***** *******, ******* ****** *** ***** $200.
  • **** ************ *****: ******* ***** *** ********* **** ***** **/*** **** ******** speed ** ******* ** ******* ****** ***** *** ** ******** with *** *******.  *******, *** **** ** ******* **** **** enough ********* *** * ****** ** ** ** ********** ** camera.
  • ***** ******* & **-***********:  ** ** ********* * **** **** ** **** *** existing ******* ***** ** **-***** ** ** **** **** **** it ** *********** ********, ********** *********, *** *** *********** *******.  Existing ******* *** **** ** ** **-********** *** ******* ************ quality.
  • ********: *********, **** ******** *********** **** *** ******** ******** *******, whereas ********* ********** ** ****** ******** ******* *** ***** ********** of *** ** ****** ***** ** ******, ********* ** *** manufacturer.

Using ******** **** **** **********

*** ************ ** **** ********** ** ****** ***************: ** *** camera *** * ***** **** ****** ***** ********* ** ********* in *** ****** *******, ** ***** *******, ** ** ** adjacent ******** ***.  ** *** ******* ****** ********, ******* ***** form ****** ** **** ******* ********* **** **** * ***** supply ** *********.  *** ******** ******* ***** ******** ** *** side ** *** ********* *** * *** ***** ***** ******** the ***** *** ** *** ****** ** ******* ******.  **** current *********** *** ********** ******** *** *****, ** ******** ** data, *** ****, *********** *** **** *** * ***** ****** at *** ****** ***. *******, *** *** ************* ******* ****, so ***** ****** ******* **** **********.

EoC ******* *******

******* ********** *** ******* ********* ** *** ***********.******’* ********** *** ********’* ******** ************* ********** *** ******** *****. **** ****,*** ******* **** ********* **** *****, ****-***** ***** ****** *** ***** ************ ************ ******** *** ******** ************ **** **********. *** ** ***** ******* ***** **** **** *** ****, with **** ******** *** **** ****, *****-**** *****, *** ***** capabilities.

EoC ****

************, *** ***** ******** ** ***** **** ***** ********** *** been ***** ****. **** **** ************* ********* $***+ *** ******, this ******* *** **** ******** **** **** *** **** ** running * *** *** *****, $***-*** ** *******. *******, *** Altronix ******* *** **** ******** ** * ***** ***** ***** makes ** *********** **** *** ******. 

****** * *******-****** ****** ** ** *******, ** *** *** following *******:

  • ** * ******** *******: $*,*** 
  • ** * ***** *******: $*,***
  • ** * *** ****: $*,***-*,***

** *********, ******* ***** ****** ******** ******** ** *** ****-*** (NVT *** * *:* ***********/******** ***** *** ***** ****** *- and **-**** *******) **** ****** ***** ****** ********. ** ******* distances, ******* *** ****** ** ***** ****** **** ****** **** the *******. *******, ********** ** ********** ** ******** *** **** this ********** *********. ***** *** *******, *** **** ********* **** UTP ** *** *** **** ******** *****, ***** ** ******* below.

When ** *** ***

 

**, ** *** ********** *** **** ********* ** ******* *****, when ****** **** ** ****? *************, *** ******** ** *** EoC ***** **** ** *********** ***** ************ **** **** **** to **** *** ***** **** ** ****** *** **********. ************, this *** **** ******* ** **** ******** *****, ***** ******** construction **** ****** *** ****** ** *******, ** ********* **** beyond ***** *** ***** *****.

*******, **** *****-**** ******** **** ** *** ******* *********, *** becomes * ********** ****** *** **** **** *************, ** *** $200 ***** *** ** ***** ** ** **** ******** **** than **** * *** **** ***** ****. **** **** ***** systems *** ********** *** ** ***** *****, ******* ******** ****** price ****, ****** ******* ** ******* *** ****** ** ***** the ********** **** ** **-****, ** **** ** *** ********** to ********. ***** **** **** ***** ** ** ********* ** the ****** ******** *** *** ****-***, ****, ******, *** ************* are ******* ** ***** *****. 

*** ******* ***** ******* ***** *** *** ******* ***** *** also ** ********** *** ******* ***** *** ****** *** **** maximum ******** ******* **** ***** ***. *********, *****-***** ****** *** used ** ***** ************, ******* ********** ***** **** ***. ******* lots, ************, ** ********** *** *** ** **** ********** *** EoC ********, ** **** ****** **** ***** *** ** ****, and ***** *** ** ******** ** *** **** **** **** adapters, *********** *** **** *** ***** ** *** *** *** which * ***** ***** ********* ***** *******.

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