Two major Windows based IP PBX vendors have released their versions of call monitor and control tools on the same day. 3CX just released their 3CX Call Assistant and PBXnSIP announced their pbxnsip Attendent Console today.
Good Screen Shots of PBXnSIP's PAC:
See my first impression video of 3CX's Call Assistant: (excuse my bad, quiet voice)
PBXnSIP has an interesting feature: built in Instant Message client included in their PAC which is quite compelling. The other PAC features seem more geared to a user. Feature for feature 3CX packs in more features and seems to aim at the receptionist desk with bigger display area and more indication and control.