Thank you ... I'd like to try that. I was told that I had to have support from my VOIP provider for this function, but perhaps not, since you are making calls over the OBITalk network, it looks like. Are you able to do barging without support for the "Busy Lamp Field"? See below ... and thanks again!
I asked the following of OBI:
I am trying to enable barging among my 4 1062s. I want to allow any of the 4 1062s to barge
into an active call on any of the others. None is a "manager" or "agent", as it is a residential
application.
They said:
You will need to configure a Line key with Busy Lamp Field function to monitor other phone, for
one phone to monitor other three, you will need to set up three different Busy Lamp Field keys.
Once the monitor is working, you can enable the X_BlfBargeIn, X_BlfCallPickup or
X_BlfDirectedCallPickup under SPx Service.
Most importantly, it requires your service provider to support it as well.
Unfortunately, my VOIP provider does not support the SIP SUBSCRIBE and NOTIFY packets required for the Busy Lamp Field (BLF) feature.