I would like to configure the "busy trigger" on 2 in CallManager Express 4.2.
The goal is to be able to have the following situation:
When a call is already placed from a phone, if a second call arrives on this phone, an alert is played on this phone to announce the second call (beep).
Using this, the user can place the first call on hold and answer the second call.
The actual situation is that the second call receives directly the busy tone. It's only possible to receive one call on an IP phone. So I would like to change the busy trigger from 1 to 2.
In CallManager Express, I think that this feature is the "call-waiting".
All the "ephone-dn" are configured with "dual-line" and I added "call-waiting beep" (default value) but the second call continue to receive the busy tone.
Here is the configuration of "ephone-dn":
ephone-dn 1 dual-line
number 6600 secondary 155066600
label 6600 - Reception Switchboard
name Reception Switchboard
call-forward all 9905
hold-alert 30 originator
Do you know what is missing in the configuration to be able to receive 2 simultaneous calls on an IP phone?
Thanks in advance,