[Asterisk-Users] System layout

[Jake Alley]

Hi,
   I'm a bit new to phone systems technology, so sorry if this question may 
sound uninformed.

   I want to put together a system of about 20 stations.  What I'm 
invisioning is a system where about 16 users have a inexpensive handset 
hooked up to their computer via some sort of modem and the computer would 
run their usual Windows apps with a client that serves as a more complex 
interface to voice mail and extended dialing features.  I would like the 
handset to behave as a normal phone as long as the computer is turned on.

   The other 4 stations would be "stand alone" handsets so that a 
receptionist could answer and forward calls to either the user or his/her 
voicemail.

   Is something like this possible using asterisk software/digicom hardware? 
  Would it be reliable for 20 stations/16 users, 6 phone lines?

   Also I'd like to have worldwide users appear to be on the local phone 
system through voice over ip.  Is that possible?  Our local network is 100 
mb/s and our internet connection is 768kb/s in both directions.  Would that 
be enough?

Thanks,

Jake

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