Root Shell on Modem

I have a GX Titanium-2122A , I want root shell via Uart , I'm using an arduino (cause me got no uart to ttl board) , I found the debug pins (vcc,rx,tx,gnd) , Connected my arduino up and tried to read data , it did show stuff but I guess the baud rate was wrong , I'm fairly new to this space , help would be appreciated

Also in image2 , the vcc pin has a component attached while rx and tx Don't , idk if that affects the reading.

Image1:The Serial Ports

Image2:The Pins

submitted by /u/Electro2077
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from hacking: security in practice https://ift.tt/0flmq97