I want to use Jabber on my Android phone to send/receive work calls. But what if someone is calling me for a personal call on my phone while I am working? Will all (work and personal) calls be routed through Jabber? Or just my work calls? How do I configure Jabber so that only work calls go through Jabber? And is there a way to silence my personal calls (and have them go to my personal voicemail) while I am working while keeping the ringer on for Jabber (work) calls?