AVAYA IP Office - 7 years minimum. Look, there are no moving parts and upgrades are a couple hundred dollars and a few hours, it's
a solid telephony solution.
Cisco VoIp - 5 years maximum. Our experience here in supporting these systems has been that a couple years in, it requires an
expensive upgrade to remain compatible with the latest Windows systems on which the Agents reside. A workaround here is to run
XP in
Virtual Mode. The other reason that life is limited to 5 years is that the servers/hardware they place them on are typically only
warrantied for 5 years max.
Exchange Server - 5 to 7 years. Most companies here skip every other version of exchange, so most folks going to Exchange 2010
today are on Exchange 2003. This helps defray deployment costs by 'skipping' a deployment cycle. And these days,
Dell and soon
others will warranty servers for 7 years, as it makes business sense.
Firewalls - 4-5 years. This is typically as long as the manufacturer is comfortable standing behind the product. Also pay attention to
"trade-up" programs and try to pre-purchase at least two years of support as it's cheaper that way.
Switches - 7 years+. The
HP Procurve line carries a lifetime warranty, so unless you need more functionality, like PoE (
Power over
Ethernet) built-in, use it as long as you can.
In the end, it's all about the best use of strategic IT dollar and how you stretch and leverage your expenditures.

We've moved! We now have a 50% larger data center with more rack space, all the bells and whistles, and are able to host more cost-
effective solutions like
cloud hosting,
SBS hosting,
web hosting and proactive system monitoring. Also, if you're moving, we can be
your stop-gap for mission-critical applications as we can host your systems as you transition.
Recently, we also have become both a
Juniper Networks and
Barracuda Networks partner to add to our list of strategic partnerships.
The way we see it, if we can deploy the solutions for companies, we don't need to make as much in the sale of the hardware and
software solutions, controlling your total cost of deployment.