VoIP phones with DHCP

How does DHCP work with VoIP phones?  Do they phones need to get restarted every time the DHCP lease expires?  Or it works no different than a regular computer client?
For the first time phones need to be booted to obtain IP addresses.  Also when DHCP or DNS server changes.  What about a regular DHCP refresh at the end of the lease duration?
We use Polycom ip phones over poe.
Please advice.
LVL 17
Tiras25Asked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

x
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Andy BartkiewiczNetwork AnalystCommented:
should be the same as any other IP device
1
atlas_shudderedSr. Network EngineerCommented:
DHCP process is the same regardless of end device being used.  

When you build DHCP, you can do one of either three things:

1.  Allow DHCP to manage with your normal settings (DHCP is built to confirm address availability prior to assignment)
2.  Set the lease to a never expire option
3.  Build static address assignments for the phones

My org manages around 2500 phones and we use option 1 unless behind a firewall denying ICMP.

Any changes to the pool that would impact device connectivity would require a reboot if changes are to take effect or have affect immediately.

Otherwise, phones will renew/re-register only while the device is not in use and generally only have a built in timeout is reached.
1

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
Tiras25Author Commented:
Got it.  So no difference than any computer, or other IP device.
Thanks guys.
0
atlas_shudderedSr. Network EngineerCommented:
Correct
1
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Networking Hardware-Other

From novice to tech pro — start learning today.