Identify rogue adsl modems routers in the network

[t35tman <t35tman () gmail com>]

Hi all,

Had a weired requirement recently.
I was wondering if there is any way to detect an adsl modem/router 
connected to a phone line.

The scenario being able to trace the adsl modem/router internally from 
within the corporate network or externally from the ISP network.

The only option I see is to check with the ISP ... any suggestions ?

Thanks and Regards



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