[asterisk-dev] Zaptel Issue 11153

[Eric "ManxPower" Wieling]

There is a thread on -users this week about a no-audio issue as well as 
the solution someone found.

Tony Mountifield wrote:
> In article <003801c826df$03698a70$0a3c9f50$@com>,
> Matthew Yingling <matt at xenotran.com> wrote:
>> Hi,
>>
>> I was testing a PC set up with Asterisk 1.4.8 and Zaptel 1.4.4 and
>> discovered that hold music would play, but anything requiring a voice prompt
>> would hang indefinitely.  I came across this issue, which is marked closed.
>> I am  able to replicate this exact behavior.  I am not using any zaptel
>> hardwar and if ztdummy is running, no voice prompts will play, but hold
>> music will.  If I unload ztdummy, voice prompts and music both work, but
>> MeetMe() does not.  It works whether Zaptel is loaded or not.  What is
>> interesting is that I just tried this same installation in a different PC
>> and it works fine.
>>
>> I am running a live installation (Slax 5.1.8.1 with kernel 2.6.16) of
>> Asterisk on a USB stick, so the complete OS and configuration is identical
>> on both systems, but one exhibits this issue while the other does not.  Can
>> anyone suggest a way to determine whether this is a Zaptel or Linux kernel
>> issue?
> 
> Sounds like on the bad system ztdummy is not getting nay interrupts.
> 
> Try running zttest on each system and see what it shows. Also check
> the output of "cat /proc/interrupts" on each system. You should have
> an entry for "rtc" counting up at about 1024 per second.
> 
> ztdummy and zaptel should be loaded and running for the above tests.
> 
> What is the make and model of each PC?
> 
> Cheers
> Tony