Hello, Steve!
At 03:55 AM 02/21/2006, you wrote:
ztdummy was only used for timing. Linux 2.6 provides this function in
the kernel and I assume Solaris already has timing functions there.
Page 36 of Asterisk: The Future Of Telephony
(O'Reilly Press) states that you either require a
Digium PCI card to provide clocking, or ztdummy
if you "lack the PCI hardware required to provide
timing". It goes on to mention that a UHCI USB
controller was required pre-2.6 but now that
there's a 1kHz clocking source in the kernel,
ztdummy will attach to that instead, thus
eliminating the requirement for the UHCI USB controller.
While it doesn't explicity say so, it seems to
very strongly imply that either a PCI card or
ztdummy are *required* for some Asterisk
functionality (namely music-on-hold and
conferencing, apparently). Is this actually not the case?
Just for reference, here's the section in
question, verbatim (copy-and-paste from the PDF):
The ztdummy Driver
In Asterisk, certain applications and features
require a timing device in order to operate
(Asterisk wont even compile them if no timing device is found). All Digium PCI
hardware provides a 1-kHz timing interface. If
you lack the PCI hardware required to
provide timing, the ztdummy driver can be used as
a timing device. On Linux 2.4 kernel
based distributions, ztdummy must use the clocking provided by the UHCI USB
controller. The driver looks to see that the
usb-uhci module is loaded and that the kernel
version is at least 2.4.5. Older kernel versions are incompatible with ztdummy.
On a 2.6 kernelbased distribution, ztdummy does not require the use of the USB
controller. (As of v2.6.0, the kernel now
provides 1-kHz timing with which the driver
can interface; thus, the USB controller hardware
requirement is no longer necessary.)
The default Makefile configuration does not create ztdummy. To compile ztdummy,
you must remove a comment marker from the
Makefile. Open it in your favorite text
editor and look for the following line:
MODULES=zaptel tor2 torisa wcusb wcfxo wctdm \
ztdynamic ztd-eth wct1xxp wct4xxp wcte11xp # ztdummy
Remove the hash* (#) symbol from in front of
ztdummy, save the file, and compile
Zaptel as usual.
--
Alexander Burke, A+, CCNA
Kingston, Ontario, Canada
_______________________________________________
--Bandwidth and Colocation provided by Easynews.com --
Asterisk-Users mailing list
To UNSUBSCRIBE or update options visit:
http://lists.digium.com/mailman/listinfo/asterisk-users
