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RE: [Xen-devel] asterisk, ztdummy, and usb

To: "James Harper" <james.harper@xxxxxxxxxxxxxxxx>, <Xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: RE: [Xen-devel] asterisk, ztdummy, and usb
From: "James Harper" <james.harper@xxxxxxxxxxxxxxxx>
Date: Fri, 20 May 2005 11:20:13 +1000
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Thread-topic: [Xen-devel] asterisk, ztdummy, and usb
Reading the docs more closely, it looks like the ztdummy module under a
2.6 kernel uses the rtc to generate interrupts at the required
precision. What sort of rtc interface does xen give the domains?

Thanks

James

> -----Original Message-----
> From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx [mailto:xen-devel-
> bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of James Harper
> Sent: Friday, 20 May 2005 10:21
> To: Xen-devel@xxxxxxxxxxxxxxxxxxx
> Subject: [Xen-devel] asterisk, ztdummy, and usb
> 
> I'm running asterisk (OS PBX) inside a u domain for testing, and it
> works reasonably well but without a timing provider, things like Music
> On Hold don't work well, and the sound can be a bit off.
> 
> Asterisk makes use of timing provided from the exchange via 'ZapTel'
> timing. If you don't have any ZapTel hardware, there is a ztdummy
module
> which uses a timer of some sort that exists in the usb controller,
which
> at this point is my only option.
> 
> Does anyone know enough about usb to know what timer is being talked
> about here, and if the existing per-device usb project that was being
> talked about in xen would be able to map that through to a domain
> without mapping the whole usb controller?
> 
> Thanks
> 
> James
> 
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