One of my customer has OS4K as telephony server. He has three requests:
1- Extend key-system for a station beyond 28 (DID trunks bellow keys).
2- Mute or disable one of the trunks or keys (key-system) without any commands.
3- Calling with telephone when ringing (in a call-pickup group or ...).
I offered the OpenScape Xpert.
Is this satisfy the customer?