I've been asked to have a look at a Asterisk VOIP system. It has 2 issues: some phone voice quality is poor and sounds like a speakerphone and sometimes parked calls get dropped. Before I commit to looking into this, can I get some insight into what I should look for? I am asuming poor network layout. This being a small private school I suspect they went super cheap with the network side. I am totally not familiar with this system. I would like the new client but if this needs to be sub'd out I need to know ASAP.