I had a request from a department that wanted to upgrade their phones. This is a police dispatch center. They currently have 8434D phones and would like to be able to have enough auto-dial buttons for everyone in the department, other department numbers, etc. Is there anything that can be added onto these phones or replace the phones with something else that would give them this capability. I don't want to switch them to IP phones in the dispatch center in case they loose power and the stations go out of service. We are using the Avaya CM6 system. Thanks for your help.