I filed a support request, but whilst they’re working on it I thought I’d see if anyone has a workaround.
I have an extension mapped (510) onto my Snom 320. I want to add a new Custom Extension (510 @ 10.0.0.30). However, I am unable to do so. I can successfully map a new custom extension if I define 511 @ 10.0.0.30, however the old system requires 510 and I don’t want users to have to renumber during the migration to the new server…
Actually, it matters not whether or not the local extension has been mapped. Mapping the custom extension always maps a local one if the left part of the SIP address is the same.
Is there a way around this?