Steven Critchfield wrote:
You may want to continue having a general access PA that is just likeGood points. It looks like the traditional paging systems we use allow for direct connection from any PBX.
your currently installed system. Your PA probably needs to be easily
understood in the hallways as well as the classrooms. Cost of wire and
speakers are much lower than an IP phone and the extra power
requirements and possibly buggy firmware.
If you aren't planning on data to the classroom, you probably areShould have been clearer in the original e-mail - we will already have 6-8 CAT5 drops to every classroom for hooking up computers and printers. The question really comes down to do we put in an additional CAT5 drop for the phone instead of cat3, and then what types of phones to put on those drops.
already behind. You probably should plan on running 2 cat5 cables to
every room. At worse, you use 1 cat5 for plain old telecom. You at least
have options at that point. See about running them all to nice patch
panels so that you just make jumpers from the kind of network you want
over to the port that needs it.
A couple of direct replies have already strongly suggested using CAT5 across the board, even if we go with a traditional phone system. This makes a lot of sense to me.
Do consider that you don't have to purchase fancy phones for theI've already given thought to this for retrofitting our existing sites when the time comes (I figure once we have the new school working on Asterisk switching the others will be much easier to sell).
classrooms. You could use analog telephones that are cheap to replace
and use a group of channel banks to support the phones. Maybe a bit more
expensive than the IP phones, but it is tried and proven technology.
I guess the question comes down to which of three possible network designs to use (once wiring is assumed to be CAT5 across the board):
A) Analog classroom phone -> Paging/Intercom System -> Paging/Telco gateway -> Asterisk
* Limits number of clasroom calls that can be made to capacity of gateway
B) IP Classroom Phone -> Asterisk -> Paging/Telco Gateway -> Paging System
C) Analog classroom phone -> Channel Bank -> Asterisk -> Paging/Telco Gateway -> Paging System
-- Chris Hobbs Silver Valley Unified School District Head geek: Technology Services Coordinator webmaster: http://www.silvervalley.k12.ca.us/~chobbs/ postmaster: [EMAIL PROTECTED] pgp: http://www.silvervalley.k12.ca.us/~chobbs/key.asc
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