I have configured a Yealink SIP-T54W using auto provision, and added call park feature keys from the PBX configuration.
When I try using these call park keys, they do not function properly - the phone says 'failed to transfer'. If I manually dial *05+6001 (or whatever park extension I'm using), it works properly.
How do I get the DSS Keys to properly park and retrieve calls to specific Park Extensions?