On a Dual Processor
Do a full regen.
REG-CODEW;
DEA-DSSM:A1,1;
DEA-DSSM:A1,6;
remove the A1 (bottom -. ) processor from the system
remove the SIM card
Put SIM card in new processor
Put a small piece of plastic like the end of a zip tie/tie wrap to keep the SIM card in place.
Replace processor
When -. on A1 processor card then
Logon
ACT-DSSM:A1,1;
DIS-LSSM; (To see if CDR is working)
The telephony will stay working from the Active/Standby Processors...
If it is a Single Processor System then you will lose telephony