[cisco-voip] Configuring pickup groups

[Robert Kulagowski]

We have a site that has a PagePac unit connected to a FXS port.  CM is 
4.1.3sr2.

When the receptionist steps away / end of day, they forward the main 
number to the overhead night bell.

The Night Bell is in a pickup group, as are all the phones, so that 
after hours anyone can pickup incoming calls.

The problem is that because all phones are in the same pickup group, any 
user can pickup anyone else's ringing phone, which they don't want.  The 
other issue is that once a user hears the overhead, they press Pickup 
and the incoming call starts ringing at that phone, they get CallerID, 
and then can't hit iDivert to send it back to the main number's VM box 
if they don't want the call.  Instead, they have to wait for RNA in 
order for the call to end up in the main number VM.

I investigated the other pickup options:
Group Pickup might work, but means that it's now a two-step process to 
pickup a call, but it will allow me to put the phones in one pickup 
group and have the overhead in another pickup group.  I would remove 
"Pickup" from the softkey template for the phones.

I tried to configure OPickup, thinking that I could put the phones in a 
pickup group that had a partition that wasn't in their calling search 
space, but have the overhead in an associated pickup group that _was_ in 
their CSS.  Doesn't work; CallManager won't let you configure a DN with 
a pickup group whose partition isn't in your CSS.

Any other ideas on how to implement this functionality?