asterisk users - Jan 2009 - pstn hangs up: MWI no message waiting ??

pstn incoming on a TDM400P, sometimes i* won't answer, going into
a loop like this:

  -- Starting simple switch on 'DAHDI/4-1'
[Jan 16 10:38:55] NOTICE[5808]: chan_dahdi.c:7130 ss_thread: Got event 
18 (Ring Begin)...
[Jan 16 10:38:57] NOTICE[5808]: chan_dahdi.c:7130 ss_thread: Got event 2 
(Ring/Answered)...
[Jan 16 10:38:57] NOTICE[5808]: chan_dahdi.c:7299 ss_thread: MWI: 
Channel 4 no message waiting!
     -- Hungup 'DAHDI/4-1'
........................

I don't have any Message Waiting set ( or at least I don't think so.)

Restarting * solves it for a while.

Any suggestions?

sean

----- "sean darcy" <seandarcy2 at gmail.com> wrote:
> pstn incoming on a TDM400P, sometimes i* won't answer, going into
> a loop like this:
> 
>   -- Starting simple switch on 'DAHDI/4-1'
> [Jan 16 10:38:55] NOTICE[5808]: chan_dahdi.c:7130 ss_thread: Got event
> 
> 18 (Ring Begin)...
> [Jan 16 10:38:57] NOTICE[5808]: chan_dahdi.c:7130 ss_thread: Got event
> 2 
> (Ring/Answered)...
> [Jan 16 10:38:57] NOTICE[5808]: chan_dahdi.c:7299 ss_thread: MWI: 
> Channel 4 no message waiting!
This message occurs when the pstn sends a FSK spill indicating the 
message waiting status of the FXO port in question.   This may encoded 
in the caller ID indicator or may be contained in its own message spill. 
This is output as a NOTICE logging message. 

Regards, 
Doug Bailey