Hi, i have recently set up an office in a remote location using the MR600 router for internet connection. I purchased a Yale alarm system which requires a phone connection to alert you of any intruders but it requires an RJ11 phone connection to work. 

Basically i need to create a phone line using my 4G router but i'm not sure how to do this. 

I notice that i can purchase an adapter on Amazon as per the below:

Is this the answer or will something further be needed? Something tells me its probably not as simple as this ;)