Hmmm, I have not look at that code  in a while.  Yes, I did make the decision to use monitor  rather than transceive.  You can just do a *3 at the end of the node number to fix it I guess.  The proper solution is to have a dial prefix for ASL in the account setup, but that will not be something I do in the short term.  
If you use the AD-Hoc menu it should not add a prefix, so I might suggest that is a good solution for a while