[Asterisk-Users] my_zt_write

[Kris Boutilier]

> -----Original Message-----
> From: David [mailto:david at ccds.ca]
> Sent: Friday, May 06, 2005 10:12 AM
> To: 'Asterisk Users Mailing List - Non-Commercial Discussion'
> Subject: [Asterisk-Users] my_zt_write
> 
> Hello Guys, 
> 
> Any idea what this means:
>  WARNING[2138]: chan_zap.c:4409 my_zt_write: Write returned -1 (Resource temporarily unavailable) on channel 1 - audio may have been lost

You need to do a little more searching first for this kind of issue. Begin by ensuring you've addressed all the possible issues documented in http://www.mail-archive.com/asterisk-users@lists.digium.com/msg87960.html and then come back if it's still happening. Quoting a very recent message to this list on this exact topic:

-----Original Message-----
From: Kevin P. Fleming [mailto:kpfleming at digium.com] 
Sent: Wednesday, May 04, 2005 10:49 AM
To: Asterisk Developers Mailing List
Subject: Re: [Asterisk-Dev] my_zt_write: Write returned -1 after a CVS update on an otherwise working system

Andrew Kohlsmith wrote:

> The hardware did not change (P4 MicroStar 865PE Neo2-V) and MSI mainboards 
> aside, what changed in *ASTERISK* to make this break?

As has already been documented on IRC, a change was committed to 
chan_zap to make these messages appear at a level lower than 'debug'. 
(bug #4107)

The purpose of this was to make people actually aware that the Zaptel 
drivers were not accepting data they should be; if this is happening on 
your system, then it seems to be reasonable that we need to find out why 
that is happening, since the drivers should always be able to accept 
data from chan_zap.