[Asterisk-Users] Latest CVS fax detection & grandstream bug

[Andrew Yager]

Hi,

I have finally tracked down this problem a bit more. The problem is not 
actually related to the Grandstream phones - just they were the only 
obvious exhibitors of the problem.

The problem seems to be that when faxdetect is set in zapata.conf, 
asterisk does not inform the sip phones that a voice call has started 
actually been answered.

The console shows this:

     -- Executing Dial("SIP/1000-b180", "Zap/1/0405152568||m") in new 
stack
     -- Called 1/0405152568
     -- Started music on hold, class 'default', on SIP/1000-b180
	(mobile ringing & answered, but SIP phone still playing hold music)
     -- Stopped music on hold on SIP/1000-b180
	(hungup sip phone)
     -- Hungup 'Zap/1-1'
   == Spawn extension (local, 0405152568, 1) exited non-zero on 
'SIP/1000-b180'

In this case, not even my fantastic Cisco phone can hold or transfer 
the call. I still thinks it is ringing.

If I remove the faxdetect line, I get the following behaviour:

    -- Remote UNIX connection
     -- Executing Dial("SIP/1000-ac04", "Zap/1/0405152568||m") in new 
stack
     -- Called 1/0405152568
     -- Started music on hold, class 'default', on SIP/1000-ac04
     -- Zap/1-1 answered SIP/1000-ac04
	(phone & mobile ringing, answered mobile call)
     -- Stopped music on hold on SIP/1000-ac04
     -- Hungup 'Zap/1-1'
   == Spawn extension (local, 0405152568, 1) exited non-zero on 
'SIP/1000-ac04'

This time, it is all good. The Cisco phone realises the call is in 
progress and works perfectly.

Setting faxdetect=no causes everything to behave absolutely properly, 
with no problems whatsoever.

For reference sake - upgrading the grandstream phone to the 1.5.0 
firmware has meant that it now behaves similarly to the Cisco phone and 
carries audio to the handset even during the non-ringing stage.

Any help on what to do from here would be useful.

Thanks,
Andrew

_________________________
Andrew Yager
Real World Technology Solutions
Real People, Real SolUtions (tm)
ph: (02) 9945 2567 fax: (02) 9945 2566
mob: 0405 15 2568
http://www.rwts.com.au/
_________________________
On 25/06/2004, at 7:16 PM, Andrew Yager wrote:

> As a follow up to my previous post, I have now identified what is 
> causing the bug with the grandstream phones.
>
> When the line
>
> faxdetection=incoming is in the zapata.conf file, the grandstream 
> phones will not ring, nor connect a call to the zaptel interface.
>
> Can anyone else confirm this bug? I'm going to play with the different 
> options (incoming/outgoing/both) to see if it makes a difference.
>
> Thanks,
> Andrew
>
> _________________________
> Andrew Yager
> Real World Technology Solutions
> Real People, Real SolUtions (tm)
> ph: (02) 9945 2567 fax: (02) 9945 2566
> mob: 0405 15 2568
> http://www.rwts.com.au/
> _________________________
>
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