I know this must have been covered many times before but I am new to this. I have successfully set up DV switch mobile and can converse via my Andriod phon and my Shari PI3U. At 80 yrs you might understand how proud I am. (With more than a little help). However: I cannot , via the DV switch, connect to other nodes. I presume it is meant to be possible. When I have connected there is a line Dial String. If I enter the number of a node to connect to e.g. 41522 and press send the number is then in a block of green and nothing more happens. is there something in asterix which is meant to make this work that I have got wrong/ Assiatance would be appreciated.