asterisk users - Nov 2009 - Unexpected control subclass '-1'

I have been getting the following message every time I make a call for
the past few months:

[Nov  2 13:08:18] WARNING[9859]: file.c:1273 waitstream_core: Unexpected
control subclass '-1'

	Everything seems to be working so I do not know if this is important.
I am using Asterisk 1.4.26.1 (upgrading today to .2) with Asterisk
Addons 1.4.9, Zaptel 1.4.12.1, Libpri 1.4.10 (upgrading to 1.4.10.1
today).  What does this message mean?

-- 
Telecomunicaciones Abiertas de M?xico S.A. de C.V.
Carlos Ch?vez Prats
Director de Tecnolog?a
+52-55-91169161 ext 2001
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Carlos Chavez wrote:
> 	I have been getting the following message every time I make a call for
> the past few months:
> 
> [Nov  2 13:08:18] WARNING[9859]: file.c:1273 waitstream_core: Unexpected
> control subclass '-1'
> 
> 	Everything seems to be working so I do not know if this is important.
> I am using Asterisk 1.4.26.1 (upgrading today to .2) with Asterisk
> Addons 1.4.9, Zaptel 1.4.12.1, Libpri 1.4.10 (upgrading to 1.4.10.1
> today).  What does this message mean?
You can safely ignore it.  If you'd like to post a note to 
issues.asterisk.org, we can make it go away.

Asterisk uses "control frames" as an internal messaging mechanism for 
certain types of signaling between channels.  A "control subclass" is
a
type of control message.  An example of a subclass would be RINGING to 
indicate that the far end has sent us a message to say that they are 
ringing.  A subclass of -1 basically means "stop whatever I told you 
last".  If the last message was RINGING, a -1 means to stop that
indication.

-- 
Russell Bryant
Digium, Inc. | Engineering Manager, Open Source Software
445 Jan Davis Drive NW - Huntsville, AL 35806 - USA
Check us out at: www.digium.com & www.asterisk.org