Bob,

I suggest that first you go to the Echolink webpage and find your repeater's node number.  If your friends wish to contact 
you via the repeater, they need to know that first.  If, on the other hand you would like to contact them, you need to 
know their node number.  You will be able to press the relevant on the keypad of your ht whilst transmitting and their 
echolink will be contacted to your repeater.  You must disengage their node as soon as you finish the qso by pressing 
the hash key whilst transmitting.

Regards,
Charlie 9h1fbs