How to configure Call waiting while agents available

[jacob310]

If an agent is busy with another call, another person calling them should receive a notification that the agent is on another call.

[medin41]

HI,
we're migrating some TDM licensing to IP and we want replace some 2500 analog phones for Avaya IP Deskphone 1210 but we can't enable the call...

[amvip]

Hi..
I would like to configure call waiting on avaya ip office so that the user be aware of incoming call while he is on a call and the caller know...