I need to set up a new CISCO VOIP network. Want to know if I need Call Manager or 2821 ISR with Voice card .... Anyone have experience with setting up a simple voice network?

need to set up a new CISCO VOIP network.  Want to know  if I need Call Manager or 2821 ISR with Voice card ....  Anyone have experience with setting up a simple voice network?

Trying to determine whether I shoudl use Call Manager or the Call gateway integrated into the Cisco 2821.  My client is using a simple T1 and I will be intalling a 2821, POE switches and a WLC for future wireless APs as well as Cisco 7920 wireless phones.  

Just a basic idea is all I need.  I am really confused about the 2821 vs. Call Manager.  I have used both....
chaviscmAsked:
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lrmooreConnect With a Mentor Commented:
Easy questions first
UC500 is really Call Manager Express under the hood, with limitations.
Telephone numbers come from your T1/PRI/SIP telco provider
Yes, the 2800ISR can do it all!
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lrmooreCommented:
How many total phones? Call manager Express runs on the 2800ISR router and would probably be a good solution. Include the Unity Express AIM or NM to provide Voice mail..
There are some 2800 series voice/CME/CUE bundle deals that work out pretty well and support most of the Cisco IP phones.
2821 can only support up to 35-50 phones max..
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chaviscmAuthor Commented:
Great. What I wanted to hear.  So the 2800ISR can do my date routing (terminate my T1), and run call manager to do my voice routing?  Question.  Who would provide my telephone numbers.. i would have to get with the provider for that?  Would I have to worry about licensing?  How does that compare in your mind to the Cisco Unified Communications Series 500?
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chaviscmAuthor Commented:
That's great.   I will either go with the 2801 or 2811.  This can be closed.  I may open more as I go along....  Thank you!!
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