[Asterisk-Users] Zaptel and ztdummy and timming question

[Chris Stenton]

On Sat, 2004-10-02 at 03:37, Kristian Kielhofner wrote:
> Duane Cox wrote:
> 
> > What's the default timing configuration going to be with zaptel and a 
> > 2.4.x kernel?
> > 
> > I didn't compile USB into my kernel, and as a matter of fact probably 
> > shut it off in the BIOS...
> > 
> > Duane Cox
> > 
> 
> If you have digium hardware, don't worry about it.  If you don't, read on.
> 
> You need a timing source more "accurate" than the standard PC RTC (100 
> ticks / second in most OS's).
> 
> The digium hardware has this, and the zaptel drivers provide a mechanism 
> to interface with this.
> 
> If you don't have Digium hardware do this (not necessarily in this order):
> 
> 1) ztdummy on 2.6 - I haven't done this, but many say it works.
> 
> 2) on FreeBSD recompile the kernel with HZ=1000 in the config file - 
> this should work, but I haven't heard of anyone doing this
> 

I do .... but then again I did write it :-) Works fine.


> 3) linux 2.4 with a UHCI usb controller - use ztdummy
> 
> 4) linux 2.4 without SMP, without UHCI usb and rtc compiled as a module 
> - use zaprtc.  Google it.
> 
> 5) Buy Digium hardware to support them.
> 
> 	These are all of the available options for timing hardware & * (that I 
> know of).
> 

I think some third party ISDN cards have support as well.

Chris