I'll be doing a new Asterisk deployment soon, and would like to gather your thoughts.

Here are some items that need to be kept in mind:

Support 800 phones (400 of which are analog)
Concurrent calls ... ? but need to guess high so that the server can handle this.
Voicemail will be required along with sending voice mail attachments to email server.
Flash panel for switchboard operator.
Needs to be a distributed server design for redundancy and fail-over.
Will need to be integrated into an existing PBX until each building is switched over to use the Asterisk servers.
If calling 911 from a building among multiple buildings, how can EMS find that person based upon the call?
What type of data line should be used in this setup? T1?
The physical network will support QOS and the like, so that is not an issue.


What type of design/setup do you recommend for this? How about server resources...ie...CPU, RAM, Disk space.

How about backups? Does imaging work best if a server were to fail?

Any thing else you can think of?

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