Camera Embedded With Cellular Modem

Nirmal - The only camera manufacturer I am aware of with a built-in 4G cellular modem is E-Line, unfortunately these cameras do not appear to be ONVIF conformant and only work with edge storage and their "cloud service". I doubt these will connect to any standard VMS platform.

Back as an integrator, I was doing some testing installing 3G/4G routers in Dotworkz D3 housings with PTZ cameras as they had enough room in the housing for it.

Hi Jim - I am familiar with Brickcom but haven't used their cameras in any applicatioyes I have few big opportunities which prompted us to look for an integrated diy type solution

There are some pretty small modems you could put with a brick style IP camera in an outdoor enclosure...

http://www.sierrawireless.com/en/productsandservices/AirLink_Gateways_Modems/Intelligent_gateways/~/media/Data%20Sheet/AirLink_Datasheet/LS300_Datasheet_NEW.ashx

http://www.sierrawireless.com/en/productsandservices/AirLink_Gateways_Modems/Intelligent_gateways/Raven_Series.aspx

http://www.sierrawireless.com/productsandservices/AirLink_Gateways_Modems/Intelligent_gateways/GX_Series.aspx

maybe

http://www.digi.com/products/wireless-routers-gateways/routing-gateways/digiconnectwanfamily#specs

http://www.virtualaccess.com/pdf/asset-datasheets/Dsht_GW2020.pd

or something else similar?

seems you could find a compact rugged modem to pair up with cameras and housing to create something easy to deploy... Good luck!