1. PBX Basics

2. Digital PBX: Line card technology
Lack of redundancy
High reliance on VAR
Premise-based IP PBX: Server technology
Dependant on main location for “brains”, VM, advanced features
Require MPLS or private connection for multiple locs
With all PBXs…
Highly dependant on telco providers
PRI/ Analog lines down = location not reachable
MPLS/ Priv conn down = remote locations down
Local environmental problems = location down

3. LAN
Voice

5. Traditional PBXs & LANs
Lots of wires!
Cat 3 for digital phones
Cat 5/6 for LAN
Seeing Double
Separate networks for voice & data
Lots of circuits …
Voice Circuits
Internet Circuits
MPLS/ Private Data Circuits

7. Traditional PBX/ LAN Facts
Managed Locally
Single Point of Failure Rich
Expensive to acquire/maintain – Poor use of Cap Ex
Technology aging on different depreciation curves
Technology integration difficult
Inefficient use of bandwidth/network
Requires multi-specialty IT staff
Scales poorly in growth scenarios
Obsolete by Manufacturer design

8. THANK YOU!