caddx nx-8e with nx-591e cellemetry module


New Member
I have a GE caddx NX-8e connected to a land line with cellular backup via the NX-591e module.  I installed and configured this system in 2006 and it is still in use today. I use the monitoring service and the GE/Numerix service (for the cell module).  
I need to get rid of the land line and would like to keep the system working with the cellular module (only) if this is possible. 
I do not remember the last time I made a programming change,  and am struggling a bit to get familiar with this again. 
I would greatly appreciate it if anyone can provide steps required to accomplish this.
I have the master code and the worksheets that I used to originally program the system.
Alan Bernier