Yes, you can buy giant PBX switches from the major vendors with -48 DC power supplies instead of AC.
The reason for an asterisk system to be able to work from -48v is really only if the end-user customer requires it as part of a spec. - I would think only a minority of sites would require this though. These days, most equipment rooms I've been in can supply lots of backed-up AC.
regards Scott Stingel
www.evtmedia.com
Erick Perez wrote:
so the switches, etc have two power interfaces? one for the -48dc and the other for the AC plug? or you must specifically buy -48vdc equipment?
besides being used by telcos....any other advantage? power saving? noise?
On Tue, 18 Jan 2005 11:35:55 -0800, Scott Stingel <[EMAIL PROTECTED]> wrote:
-48m volt power is often used in telco central office environments, where the C.O. provides a huge amount of battery-backed up power to the switches and to power the local loops in the event of an AC power failure.
Regards Scott Stingel
Emerging Voice Technology, Inc.
www.evtmedia.com
----------------
Erick Perez wrote:
This question is for my own knowledge....i have no experience on this "electrical" area. why do you want to run -48vdc equipment? what's the advantage of doing that?
On Tue, 18 Jan 2005 13:58:59 +0100, Daniel Nystr�m <[EMAIL PROTECTED]> wrote:
What server hardware would you recommend for an Asterisk system which are really critical? The additional hardware will probably be two digium TE110P cards, and an Adit 600 platform.
If it's possible to run on -48VDC, It would be great!
Are there any experiences with any HP or FujitsuSiemens systems? Or other "complete server" systems?
Thanks!
BR Daniel Nystr�m _______________________________________________ Asterisk-Users mailing list [email protected] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
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