[Asterisk-Users] does meetme need ztdummy

[Daniel Bruce Lynes]

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On Wednesday 13 April 2005 05:34 pm, Xu Wang wrote:

> Hello
> I don't have zaptel installed, but want to run Meetme. I got errors as
> Apr 13 17:32:53 WARNING[12906]: chan_zap.c:763 zt_open: Unable to open
> '/dev/zap/pseudo': No such device

You can also install zaprtc instead of ztdummy.  But, in most cases, it 
requires a recompile of your kernel (rtc is used by default in most kernels, 
as most kernels are precompiled to use SMP).

Try the following URL for more info:

http://www.voip-info.org/wiki-Asterisk+Timer

Also note that ztdummy requires that you have a UHCI root hub for your USB.  
OHCI and EHCI will not suffice.

There is also realzap, but that requires setting up the finicky Realtime 
Application Interface (RTAI).

So, realistically, there's four timing sources:

- - zaptel
- - ztdummy
- - zaprtc
- - realzap

They are required for conferencing (meetme), and IAX trunking.  So, I would 
assume if you don't have a need for either one of those applications, you 
wouldn't need the timer, and you can safely ignore the warning on startup.  A 
good percentage of offices will require conferencing, however.
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