5603 with RFP32

[aramsay]

Has anyone been able to get a 5603 handset to work with the OpenPhone 27 style RFP's (RFP32)?

Trying to get one to subscribe, seems to get so far and fails; the syslog output from the RFP shows:

"CMI: handle_pin_memory_req (PPN 42): wrong/missing pin or ext. number?"

Am I flogging a dead horse, or should this be possible?

Thanks