We have a handful of Cisco SPA5XX phones that have a bug in their current firmware where anonymous calls cannot be transferred. We’d prefer not to downgrade the firmware, so I was wondering if there is a way for me to alter anonymous calls to have a CID that the phones would see as not anonymous, but also be clear to users that is is unknown. For example "Unknown "<000>.
I’ve played with Superfecta but have not been able to figure out a way to do this. Is it doable?