Wireless Networking For Video Surveillance Guide

Author: IPVM Team, Published on Mar 29, 2018

Wireless networking is a niche in video surveillance applications, but it can be a difficult one to understand with proper wireless design, equipment selection, interference, and other factors impacting it usage.

In this guide, we break down the key elements of wireless networking for video surveillance:

  • Topology: PTP vs PtMP vs Mesh
  • Antennas: Internal vs External
  • Antennas: Omnidirectional vs Directional
  • Antennas and Gain
  • Free Space Path Loss
  • Frequencies Including Licensed and Unlicensed Ranges
  • MIMO Radios
  • Bandwidth Planning
  • Transmission Range
  • Wireless Products Specializing in Surveillance
  • Maintenance
  • Power Requirements

******** ********** ** * ***** ** ***** ************ ************, *** it *** ** * ********* *** ** ********** **** ****** wireless ******, ********* *********, ************, *** ***** ******* ********* ** usage.

** **** *****, ** ***** **** *** *** ******** ** wireless ********** *** ***** ************:

  • ********: *** ** **** ** ****
  • ********: ******** ** ********
  • ********: *************** ** ***********
  • ******** *** ****
  • **** ***** **** ****
  • *********** ********* ******** *** ********** ******
  • **** ******
  • ********* ********
  • ************ *****
  • ******** ******** ************ ** ************
  • ***********
  • ***** ************

[***************]

********

***** *** ***** ***** ******** ******* ********** ** *** ** surveillance, **** ******* **** ********* ** ***** *** *** ******* are ********:

  • *****-** *****
  • *****-**-**********
  • ****

*****-**-*****

*****, *** **** ****** *** *****-**-***** (***) ******** *****. ** PtP ********, * ****** ***** ** *** ****** ******** ** connected ** * ****** ***** ********* ** *** ************ *******. PtP ***** *** **** ** *** ****** ************:

  • ********** *******:**** ********, *** ****** *** **** ** ******* ******* **** a ****** ******** (**** ** * ******* *** ****, *** example) ** * ************ ******.
  • ******** ********:***** ** ***** ** **** **** ** ******** ************, ********** two ********* ******** ** ********** * ********** **** ******* ** another ***** ** *** *******.

*********** ******** *** **** ***** **** ** *** ************, **** multi-mile ****** ********. **** ********* ********* ******* *** *********, **** 900 ***, ** *.* *** *.* ***, *** ******.

*****-**-**********

** *****-**-********** (****) ******** *****, * ****** ***** **** ** base *******, ********* ** *** ******* *******, **** ******** ****** transmitting ** **. *** ****** **** ** **** ****** *** be *** **** ** *** ** **** *****, ****** **** manufacturers *** ******* ****** *** *** **** ******* ** ****** higher **** ***** ******** **** ********** ******** ****** ******.

**** ** **** ** ************ ***** ******** ******* **** ** dispersed ****** *** ****, ******* ********* ***** ************, **** **** camera ******* ***** ** *** **** *******. ***** ******* ***** in **** **** * ******* ** ******* ** * ******* lot ** ****-**** ************ *******, ***** ******** ** ******* *** connected *** **** ****** ***** ********** ******* ***** *****.

**** **** ******** ********* *** *************** ** **** ***** *********** antennas (**** ** *******), ********* ** ******* ******* *** ******* in *** ********** ** ** *** ******* *********. **** ****** radios **** ***** *** ******** *********** ********.

****

** * **** *******, **** ******** **** ******** ** *** or **** ***** ******, ********* **** **** *** **** *** network *******. ** *** **** *****, **** ** ******** ** another ****, ******** *** ****** ** * ***** ******. *******, if ******** ** *******, *** **** **** ** ********* ******** to ****** ****** *****, ** ******* **** *** *** ******* overload *******.

************, **** ****** **** ********* **** ********* **** *** ** PtMP ******, *** **** ****-********* ** *********. ******* ** **** added *******, ** *** **** ***** **** ** **** ************, one ** *** *** ************ **** **** *** ****** *** need *** ***** ******** ************.

*******, **** **** ******* *** ******* *** ****** () **** ********* ************* (**** * **/*), ****** **** ********* in **** ************. ************, **** *** ****** ********* ** *********** customers **** **** **********,*******, *** ****** ** ****** **** ******** ********** *****/**********.

**** ****** *** *** *** **** ** *******, ********* ** the ******** ** ***** *****, *** *** **** ** ** connecting **.

Internal ******** *** ** *******

****** ******** ***** **** ** ** ****** ** ************* **** and *** ******* **** ** **** ********** ********, ********* **** short ****** *** *** ******** *** ******** ***, *** ************.

** ****, **** ************ ***** ************ ************ *** ******** ***** IP *******, ******* ********** ********, ********* ** ** ******** ******** radio ***** ****** ********.

Omnidirectional ********

*************** ******** ******* *** ****** ** *** **********. **** ***** are ******** **** **** **** ** ******* ** ** ** typically ******** **** ******** ******** *******, *** ***** "****** *****" style ** **** ** *** "*****" **** *****. ******* ****** function *** **** ***, *** *** ** **** ****** (*-*' long), ********* ** ******* ****.

Directional ********

*********** ******** *** ********* ** ******** ****** **** ******* **********. Some ******* ***** ********, ** ******* ********** ** ****, ***** other *** ** ****, **** *** *******. **** **** ******* type (******, *****, *********, ***.) **** *** *********** ******* *********, and * **** ******* ** ******* *** ********* ** **** form ******.

Performance *********

********* *** ****** ******* ******* ** **** *******, *** *********** comes **** ** ***** *********:

  • *************** ******** *** ******* ** *** **, ********* ****** ** no *********, *** ***** *** ******** *****. **** ****** ** used **** **** ******** ** ******* ******** ******* ** * base *******, *** *******.
  • *********** ******** **** ** ***** *** ****** ******* ****** ***** performance *** ** ***** ******** **** *******. **** *** **** commonly **** **** ** ******** ******** *** ***** ***** **** all-in-one ******. **** *** ***** ** ***** ** ***** ******* of ********* **** ******* ****** ******** ******** *** ******, *** are ********* ** ***** ******* *** ** ****, ****, *** vibration.
  • ****** *********** ******* **** ** ********* ******* *** ********* ******, but *** ********* ** *** *** ** ***** ****** *********, often ********* *********** *********** ** *******. ***** ******** *** **** often ***** ***** ******, ****** ******** ******, *** ***** **** complex *****, *** *** **** *********** ** *********** ****** *** to **** ** ********* **** ***** *****.

Antenna ****** ** ****

**** ** ********* ******* *** ****** *** ****, ********** **** being *****, *** ******* *** ****** *** ******** *** **** likely ** *** **** **** ************. *************** ******** *** ***** as *** ** *** ***** *********** ******** *** ** **** or ******.

Free ***** **** ****

** **** *******, ** ********* *** ****** ** ******** *** how *** * ****** *** ********, *** *********** **** ***** path ****, *** ****, ***:********: ** *** ******** ************.

*** ******* **** ***** *** *** *** *** ******** *******:

  • *** ********* ***** ****: ****** *** *********, *** ******* *** can ** (*.*., *.****, ********** **** *****, *** ******* ***** than *.****).
  • *** **** ** *** ******** ***** ****: *** ****** *** gain (*.*., **** ******* ** ****), *** ******* *** *** go.
  • *** *********** ***** *** ******** ********. *** ****** *** *****, the ****** ** ** ** **** *** ********* **** ********* is ********* (*.*., -***** ** -***** *** ****** ********* ******).
  • *** ************ ***** ** *** *****. **** ************ ******** ******* use ******** *********** ***** *** *** **** ***** *** ** put ***, ************ *** *** *** ****** *** ** (******, e.g., * ** ******* ***** ** ************* '********' *** ************* at **** ***** ***********).

******* ** *** ******* ************ ******** ** ****,** **** ****** ************** **** ***** ****, **** **** ********* ********, *********, ******* and ***** ***********, *** ******** ***********. *** ****** ** *** of ***** *********** *** * ****** *.* *** **** ** shown *****.

Fresnel ****

******** **'* **** ** ***** ** ******** ****** ** * line ** * ****, ** ** ******** ** ********** ****** between *** *********** *** ********, ****** ********** ****. ****** ***, *** ****** *** ******** ******* *** ******, the ****** *** ******** ** *** ******* ****.

******* ** ****, *** ********* ** *** ***** *** ****** an ***** ** **** **** ****** (**** ******* *****) ** the ****** ****** ** ***** *** ******* ****, ********* ****** to ** ******* ****** ** **********. ************, ** ******* ******, users ****** ****** ** ***** ************, **** ** *****, ******* trucks, ** ********* ******** *** ******* ****, ** **** *** also ***** **********/********** ******.

*********** *** ******** **** ** ********* *** **** ** *** fresnel **** *** ************* ******** ******, ******* ** **** ****** calculators. ************* *** ***** ***** *** **********, *** **** ******* calculators ********** ********* ******.

Obstructions / **** ** *****

****** **** *********** *** ********* ************ ****** **** ******, ******** links ****** ******* **** ***** **** ** ***** (***) ******* radios *** **** ***********. ************ ****** *********** ** ***** *** ways:

  • **********
  • **********
  • ********* ***********

**** ** **** ** ***********, **** ** *** ****** ** absorbed ***/** *********, ******** *** ***** ** ****** ******** *** receiving ***. *** **** ******* *********** ******* ** *** ********. For *******, ******* *** **** ***** (****** **** *** ****** construction *********) ****** ********** ****** ******. ** ********, ***** ********, brick, *** ***** ************ ***** ** ***** ********* ****** *** reflect **** **** *****, ********* ** **** ***********.

********* ** * ******* ********** ** *** ****** **** *** intended ****, ********* ** ** ***** ******** *** ** **** with *** ******** ***-********* ************, ******** **** *******. ****** ********** surfaces **** ** ***** *** *****, ** **** ** *******, are ***** ** ********* *********** **** ** ******* ******.

Frequency *********

********* ******* ******** *********** ** *** ****:

  • **********:****** ***, *** ****** *** *********, *** ****** *** ******* theoretical **********. **** ********* ****** *** ****** ******** * **** speeds, ***** ***** *********** *** ******* ** *-* ****.
  • ***********:*** ** ***** ****** **********, ***** *********** *** ****** **** to ********* *** ******** ******* ** ***** *********. *** *********** (900 ***, *.* ***, ***.) *** ******** ** ***-**** ** sight (****) ************, ***** ** ** ** *** **** ********* radios *** *** *********** ******** ** **** ** *** *** to ******** ** *** ***.

******* ** ****, ***** **** ********* ******** *** ******* ******** throughput, ********* ** *** ******** ************ ****, *** **** *** possibly ** ********, *** *** ******** ********* ******* *** **.

** ******* *********** ********* **** ** ************ ******* *****.

2.4/5.8 ***

***** *********** *** **********, **** *** *** ** ******, *** most ***** **** ** ******* ************ ************ **** ** ********** cameras ****** * ******* ***, ******* *** *********, ***. ********** varies ********* ** ************ ********** *** ****** ** ****** (*** MIMO, *****) ****, *** ** ********* ** *** ***** ** ~25-40 *** ****** ******, *** *** ** **** *** **** models.

*******, ***** *** ***** *** **** **** ** ***.** (*/*/*/*/**) networks ** *** ** ***** *** ********, ********** *** ********* for ************. *.* *** *** ********** **** ****** ** ************ as ** *** **** ******* **** *** *.* ****, *** with ***.*** (*** *** ***.****) ****** ****** ****** ** **** home *** ********** ********, *** ********* *** **** ******* *******.

*.* *** *** ** **** ** ******* ** ***** ********** non-line ** ***** ************, ** ** *** ********* ********* **** as ***** **** *****. *******, *.* *** ********* ******** **** of *****.

************, *.* *** *.* *** *** **** **** ** ********* obstacles **** ***** ***********, ****** **** ** ***** (***) *** when ********* ****** ** ***** *****. ** ************ ***** ************, 5.8Ghz ** **** ********** **** **** *.**** ** ** ** relatively **** *******.

900 ***

*** *** ** *** **** ****** ***-**** ** ***** *********, and ** **** ***** **** **** ******* ** *** **** a ***** **** ** *** **** *******, **** ** ***** or ***** ***** **** ******* *****.

*** ***** ********* **** ** ****** **** ** ********* ********* than *.* ** *.* *** ******. **** *********** ***** **** a ********, *******, ** *** *** ******** ***** ********* **** lower ********** **** ****** ***********, ************ ***** ~**-** **/*. *******, newer **** ****** **** ********* ********** *************, **** ***+ **/* now ******.

*** *** *** ********* ****, **** *.* *** *.* ***, is ******* *** *** ********** ************ ******, ** ** ** commonly **** ** **** ******** ********, **** ** ******** ****** and ********* *****.

10+ ***

******** ****** ***** *.* *** (**, **, **, ** ***, etc.) **** ************ ******** ** ************ *** **** **** ***** use ** *** **** *** *****, *** ** ***** ****** bandwidth ******** (***** ** ** * **/*). *******, **** ***.**** based **** ****** *** **** ******, **** ******* *** **** somewhat *******.

***** *********** *** **** **** *********** ** ************ *** ** environmental ********** **** ** ****, ****, *** ***, ****** **** budget ******** *** ****** ********* ********. *******, ****** ** ***** frequencies *** **** ****** ** *** ************ ****** ******* *** other ******* ******* ** ***** ******, ****** *** *** ** 2.4/5.8 ***.

************, ****** ** ***** ***** *** **** **** ********* **** typical *.*/*.* *** ******, ********* ******** ***** ** $*,*** *** per *****, **** $*,***-*,*** *** ********.

Licensed *****

**** *********** ** *** ******** ******** *** ******** *** ****** safety ***. ** *** **, *.* *** ** ********* *** this ******, *** ***** ******** (*********, *** *** ******, ********** entities) ******* ** ****** ****** ** **** **** **** ***** for ***. ***** *********** *** ******* ********* *****.

******* *** ********* ********* *** *** *** *** *.* *** band *** ** **** ******** ** **** ****, ************ ****** are ******** ******** ** ********** ***********. ******* ** ** ********** to ****** ****** ***, ** ** **** ***** **** ** city ************, **** ** ****** *** ***** ********* *********.

TV ***** *****

* ****** *********** ** ********,** ***** **************** **** ***** ****** ** ** ******** ******* *** ** 2010. ***** ****** *** *********** ** *** ***/*** ***** ***** were ******* ** *** ****** **** ****** ** ******* ********* TV. ***** **** *** ***** *********** (******* ** *** *** MHz), ***** ***** ****** *** ****** **** ** ********* *********, but ********** ** ***** **** **** *** ***, ******* *** at ***** ** **/* ** ********* ********* ******* *******.

MIMO ******

****, ***** *** ******** ** ******** ***, ******* ***** ****** across *** ** **** ***** ** ******** ********* *** ********** to ************. **** ****** *** *** *** ** **** ******** antennas, ** **** ******** * ****-********* *******, ***** ********* **** of ***** ******* ** ****, **** *** ********** ******* ** degrees. **** ***** *********** ****** ****** ****-********* ********:

Bandwidth ********

************* *** **** ********** *** ****** ********* *************, ********** ** frequencies ********. *.* *** *********** *** ***** *** ********* *** affected ** *** *** *** **** ****** *******, **** ** heavy **** ** ********** ****. *********** ***** ****, *******, *** be ******** *******, *** **** ****** *** ** **** *** critical ************ *****. ***** **** *******, ****** ******* ** **** conditions, **** ** ******* ******* **** *** **** ** ************, or ******** ******** ******** *** ***** ************ ******, ********* *********, or ******** **** ** ****.

Manufacturer ********* ******

** ******* ***** ************ ********* ******. ** * ******* **** of *****, ******** ********* ********* ****** ** **% ** **% when ********** ********* *** **** ***** ************ ***. *** **** news ** **** **** **** **** *******, ******** ********* **** for * ****** ** ****** (~*-* **/*) ** ********* **** to ******* ** * ********* *** ****. *******, ** ******** video ******* *** ****** *** **** *******, **** ******* ********** and ******* ******* ********.

Transmission *****

***** *** ** **** *** **** ***** *** ************ ***** in ******** ********. ********* *** ******** ** ****** **** ** obstructions, ********* ****, ************ *****, *** ******* ****.

** ******* ************* ***** **** ** ***** ** ********, **** as ******* ****, ******** ** *** **** ** * ********* when ******** ******** ** *** ** **** **************.

*******, ***** *****-**** ******** ***** *** ****** ******** **** *** right *********, **** ***** **** **** *** ************ ******** ** these ********* ***********, *** ****** ***** ****** **** ********** **** the ************ ** *********** ***********.

************, *** ****** *** ****, *** **** ******* ******* ********* must **, ****** ************ **** *********. *****-**** ***** **** **** take *** ********* ** *** ***** **** *******, ** ** may ******* ** ****** ****** ** **** ******, ********* *****.

Wireless ******** *** ***** ************

***** ******* ****** **** *****-** ********, ********* ************ ******* **** use ********** ******** ********* ******* ** ****** ** ******* ** a **** ** *** ******** ******.

**** ******** ************ ***** ********* ****** *** ** **** *******, generally **** ***** **** ******* (******** ** *** **** ******). For **** ** ******** ******* ***********, ***:******** ******** ***** ************ *************.

** *** *****, ***** *** * *** ** ***** *** interest ** **** ********** *** *** **** **** ($*,***+ *** link *** ******) *** ********** *** ********* **** ****** ** high-end, *********** ********.

***********

******* ******** ***** *** ********* ** ************ ** **** **********, routine *********** ** * *** ******* ** *** **********. ******* alignment ****** ** *******, ********** ****** ** ******* *** *********, foliage ** *** **** ** *** **** ****** ** *******, and ****. ** ******* ***** ****** **-***** ** *********** ************ ***************.

Power ************
* ***** *********** ** ********** ********-********* ******* ** *********** *** best ********* ***** ******. *** ***** **** *** * ******* radio *** ****** **** ** *** (**** **** ** *****). Finding **********, ***** ****** **** *** ******** ******** ** *** primary ********. ** ** ***** ****** ******, ***** **** **** need ** ** ****** **** ******* *** ***** ** ******* powered *******.

Electrical ******* ********
****** ******* * ******** *********** **** ********** * *** ** using ** ******** ***** ******. ** *** ** *** ****** do *** **** *** ** *****, *** **** **** ** account *** *** ********** **** ** ************** ***. **** ** important ** *** ****** ******** *** ***** ****** ** ***** to ************* ***********, ** ****** ********* *********. * ******** *********** will **** ****** *** *** *** ******* *********** ***** ******** power ******* (** *** ************* **** ** *** ******'* *********** staff).

*** **** ****** ***** ******* **** *** ****:
  • ******* *****
  • *****
  • *******

Utility *****

******** ******** ****** *** ******* **** * ******** ***-****** @ 60 ** (** ***-****** @ **** ) *******-********* ****** ** hardwired ***** ****** ** *** ******* ********.

*** ************ ** * ****** ** * ******** **** *****'* have ******** ******* ************, ***** *** ** ****** **** * nearby ********** ******** ***, ** **** ** ******** *** ** existing *******. **** *** ** ****** ** *********** *****, ****** Fields, *** ****** ******* ****** *************.

********** ******* ** ******** ***** *** **** *** *** ********** power **** ** ******* *** ****. **** **** ****** ** a *** *******:

  • ** *** ***** ** *** **** ********* ********? ** **** commercial **********, ******** ******** ***** *** ********** ** * ******** located *****, ** *****-***, ***** ***** *** ***** *** ** the ****** ****** *** ***.
  • ** *** ***** ********** **** ************ *********? **** ******** ***** run ** ****** *-***** ******** **** *** ** *** *****, so **** *** ******* *** **** ***** **** ***** ******* a****-**** ***********.

**** *** ****** ** ***** ******** ******** ************ *******.

Solar *****

*** ********* ** ***** ***** *** ******** ***** ************ **** depend ** *** ****** *** *** **********. *** ** ********** National ********* ****** *** ******** ******** ***** *** ****** ********* ** *** ** ******. ***** resources *** ********* *** ********** *** ***** ****** *********, **** the****** ***** *****. **** *** ****** *** ***** ************************.

*** **** **** **** ** ********* *** ****** ******** *** your ******, *** *** ** * *********** ** ***** ****** with ******* ****** **** **** ***** *** *** **********.

******* ****** ** ******** **** ********** * ***** ******* ****** is *** ********** ****** *** ********** ** **** *** ***** panel *** *** ********** ******* ****** *** ******* ******* *****.

***** ***** ******* **** ****** ** ****** ********* ***** ** maintaining *** ***** ****** *** ******* ****** *******.

Battery *****

******* ****** ***** ** **** ** *** ***** ******* ****** and ** ***** ** ******** ***** ************* **** *** ***** supply ** **********. *********** ** *** ********* ** ******** ** the *********** ** *** ****** *** **** *** ********* ****.

******* *********,*************** *** ********** *******-******* *** ********-******* ********, *** *********** **** a *** ******** ** ***** ******* ** ****. ************* ***** a ******* **** ** *-* ******. **** ***** ** ********* to * *** ***** ********* ** *** ****** ** ******** monitored. ******* **** ** ***** ******* ***** ********* *** ********* in **** *****. ******* **** *********** ********* *** **** ** be *********** ***** ******** *******.

Test **** *********

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

[****: **** ***** *** ********** ******* ** ****, *** ************* updated ** **** ** ******* ******* ** ************ *****, ********* selection, *** ******* ************]]

Comments (13)

* **** ****** ********** **** ******** ****** ***********, ** ***** you *** **** ********* ******.

* **** ** ********** **** ********. ***** **** **** ****** needs *****. *** ** **** *******?

**** ** *** **** ***** *********** **** ** ** ***** into ******* ******** *** *******.

********* ******** ***'* **** ** ******* *** ******* ***** *** the ****** ***** *** ****** ** *** ****. ********* ****'* still ******/******* **** ****** ** *** * ***** *** ** that ****** ****.

***** *'** **** ***** ** *****, *** **'* **** *******, it *** ***** **** ******** ** ********, ** **** ******** had ***** ******* *** ********** ****, ** ** *** **** a ****** ** ******* ** * *** ******, ** **** in *********** *** *** ****** ***** *** ******.

** *** **** ******* **** ** *** * **** ** a ******* ***, ********* ***** *** ****** ** **** ****, and *** *** ** *********** ** ******* * **** ****** the **** *** *****. ********* ***** ***** ****** ** ***** tight ******.

** ***** ** * ******* *** ***** ************. ***** *** 3 **** ****** ********** ** *** *******:

***** * ***** **** ** * **** ******* ***, ************* guide, * **** **** *** *** ******* * ******* ** how ****/******** ** ** ** ********* ***** ******** ********.

* $** **** ****** **** **** ***** *** *.**** ******* in *******, ********* *** ********. ****** **** ***** *** ******* of ********* ***** ********* ** ****.

* ***** ********* *** *********** **** ** **** **** ** mind. ******* **** ** **** ***** **** ******** ** ***** used *** *** ********** ***** **** ** ***** **.

*** *** *****, *** ******** ** "**** ******" **** ** you ** ********** ***** ** ***** ** ********* *** ********** and *** ****. **** ******* ** **** **** ** ***** the ******, ******* *** *********** **** ********* ** *** ******* and ***** *** *** ******** *** ****** ****, **** ** snow. ***** *******, ** ********* ********** ***** *** ******** ****** and ******* ** *** ***** ** ****** ** ********.

*** ********* ********* ***'* **** *** ***** ** ****** *** a ***** *** * ****** ******. *** **** ** **** do, **'* *** *** **** **** **** ******. *** **** could ** ****** *********** ****** * ********** ** *********. ** could ** ******** **** ** *** ***** ****** **** *** buildings, ** ** *** ****, ** **** ****.

** ****** *********, ***'** ***** ***** *** ********* *** ************ and **************** ** **** "***** ** **********" ** **** ************* term **, ******* ** *************** ** *** **. * ** ***** **** ******* ****** ** **** ***** of ***** ************* *** ********* ** *** ******* *********** **** can ***** *** ***** ** ********* *********** ** ********.

* **** *** **** ********** ** ********* ******** ** ******** cameras **** *** **** ******, *** **** *** ** **** an ****** ***** ** ***** **** ********* ****** ***** **********.

** *** **** * *** ******* ** *** *.* ******** that **** * - * ***** **** ** ******* *** would ******** ***** **** * ***** ***** **** ** * certain ****** ******* ** *** ***** ** ***** ~*.**** **** detection. ** *** ** **** ***** *** ****** **** ** the *.* ********.

** ********* ******* ******** ** *** ********, ** ** *** be * ***** *******.

** **** * **** **** *.**** *** ******** ****** ***** 200’ ***** **** **** ************ **** * ***** ***** **. The ******* ***** ** ***** **’ **** *** ***** ******. The ****** *** ********** ** ******* ***** ** **** ******** soon, ** *** ******** ***** **** ****** ** ** ** annoying *** ***, *** *** * ********* *****.

**** *** **** ***** **** *** ******, ** **** ******** to **? *** *** **** **** **** ******, ** ** you *******, * ********* ***** ****.

***** *** **** ************ ******* *** ******. *** ***** **** 50ft ******/****** *** ******* *****. *** ****** *** ******* ***** 15-20ft ***** *** ******.

**** ****** ***** ***********, *********** *** ****** ********** *******'* ** emitting *** ** **** ***** ********* **** **** ******, ****** they're ********* ********* ******? *** ***** ** *** ***** ****** shouldn't ********* ***** ***'** **** **** * **-**' ******* *** that ********* *****... *'* **** ***'** **** ******* *** ** this.

***, **** *** ******* ******, ** *** ** * ***** tell. **** *** ****** ***** **** ***. **+ ***. ** initially ******* ** *** **** **** ** ***** **** ********** from *** ***** ********** *** ***** ***** *******. ** *** the ****** ** * *** ** ************ ** ******* *** it ***** ***** ***. ** *** ***** *********** **** ** radios *****, *** ***** ******** ****** * ******** ****, **** the ************/********** *******. *** **** ***** ** **** *** ****** is ********** *** *** ***** *** **** *** **** ** the *****. **** *** ****** ********* ******* ***** ** *** building, ** **** ************* *** *****.

************* *********** ** ******** ***** ** ******* ** ****...**** ******** (nanostation ** ****) ********** ****** ******* ********** **** ****...* ********* removed **** **** **** ******** ***** * ** * ***** of ******* ****....*** *** ******** ***** ** *** ******* ** sufficently ********* ,************,*********** *** ********* *** ** **?** ***** ** just *** ******

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Historically, UL listings for central stations have been important, with UL 827 having widespread support. However, few central stations have...

Most Recent Industry Reports

Mobile Surveillance Trailers Guide on Jan 17, 2019
Putting cameras in a place for temporary surveillance where power and communications are not readily available can be complicated and expensive....
Exacq Favorability Results 2019 on Jan 17, 2019
Exacq favorability amongst integrators has declined sharply, in new IPVM statistics, compared to 2017 IPVM statistics for Exacq. Now, over 5 since...
Testing Bandwidth Vs. Low Light on Jan 16, 2019
Nighttime bandwidth spikes are a major concern in video surveillance. Many calculate bandwidth as a single 24/7 number, but bit rates vary...
Access Control Records Maintenance Guide on Jan 16, 2019
Weeding out old entries, turning off unused credentials, and updating who carries which credentials is as important as to maintaining security as...
UK Fines Security Firms For Illegal Direct Marketing on Jan 16, 2019
Two UK security firms have paid over $200,000 in fines for illegally making hundreds of thousands of calls to people registered on a government...
Access Control Cabling Tutorial on Jan 15, 2019
Access Control is only as reliable as its cables. While this aspect lacks the sexiness of other components, it remains a vital part of every...
Avigilon Favorability Results 2019 on Jan 15, 2019
Since IPVM's 2017 Avigilon favorability results, the company was acquired by Motorola and has shifted from being an aggressive startup to a more...
Gorilla Technology AI Provider, Raises $15 Million, Profiled on Jan 15, 2019
Gorilla Technology is a Taiwanese video analytics manufacturer that recently announced a $15 million investment from SBI Group, saying this...
2019 IP Networking Book Released on Jan 14, 2019
The new IP Networking Book 2019 is a 285 page in-depth guide that teaches you how IT and telecom technologies impact modern security...
Arecont Costar Layoffs on Jan 14, 2019
Arecont Vision, a Costar Company, has laid off more than 10% of their workforce in a move the company described to IPVM as a result of "important...

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