Setup Cisco Phones in the office

I would like to know what are the elements (Hardware) involved in setting up Cisco IP phones in the office.
For instance :
 Call Manager,  if it is mandatory and where it should be installed (on the PC or on the router ,etc..)
Cisco IP phones devices
Cisco switch and how should it be configured
Cisco Router and how showuld it be configured.

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José MéndezCommented:
Check out this document on how to configure Callmanager Express:

You will see more or less the requirements.

Now, CUCM is different, it is the full blown version and scales to thousands of users. It needs its own proprietary hardware so you can't just install on any PC/server.

Let me know if you have any other doubts.
jskfanAuthor Commented:
For instance if I  set up a new IP phone with new extension 3555 for internal calls and 802-786-3555 for externak calls, where should I do that ?
jskfanAuthor Commented:
I also forgot to ask whether Cisco Call Manager is a software you install on a computer or it is a separate  appliance ?
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jskfanAuthor Commented:
José MéndezCommented:
1- Directory Numbers are one of the many types of patterns you use to create your dialplan. DNs can be associated to phones to make them ring. When you talk about 802-786-3555 it sounds like the number you would dial from your cell in order to reach the internal DN. In that case, if the Service Provider delivers the last 4 digits of the called number, the call should come in to CUCM and hit the DN 3555. Otherwise you would need to create additional patterns like a translation pattern that catches 802-786-3555  and translates to 3555.

2- Like I mentioned before, CUCM requires propietary hardware to be installed on. Its an appliance.
jskfanAuthor Commented:
Is Cisco Call Manager  a software you install on a computer or it is a separate  appliance that you access through the browser?
José MéndezCommented:
I think I already answered that question 2 times, would you mind if I ask if I am not being clear with the information?

The appliance is accessed from a browser as it has its own web server for administration purposes. Is that what you needed to know?

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