How to setup node remote

I have a Ras. PI 3, and I’m trying to find out how to connect via my Android phone using Node Remote that I have downloaded to it. I don’t seem to be able to find any documentation on this topic, or you tube videos. All I’m trying to do is get my node to where I can connect in my car when traveling. Can somebody explain to me how I go about doing this please or tell me where to locate good documentation how to do it, I thought for sure somebody would have done a video on this. I have had my mode operating here at the house for a while, and it wors perfectly.

Thanks, Chris

I might suggest you contact the app author or their support.

Most apps connect via IAX or SIP and perhaps even USRP since we are using asterisk.

You can use any number of softphone apps including zoiper, but must follow the phone command protocol through them.
ie *99 tx / # rx