telephone systems

[Gregory Tigan]

Hi, I'm looking for referrals to providers of virtual voice and voicemail systems that allow for multiple extensions with voicemail.  Right now we're using Google Voice, but I want a system that allows me to redirect, for example, calls from current tenants to Person\voicemail A, and calls from prospective tenants to Person\voicemail B.  Looks like Grasshopper might offer this, and possibly the Google Voice plugin Ooma Telo.  Are there any others that I've missed?  Thanks.