[Asterisk-Users] phantom incomming calls from asterisk

[John Millican]

> > > About once a day I have noticed a phantom incoming call with a caller
> > > ID of asterisk at 192.168..<cut off>. When I answer the call there is a
> > > dial tone and the call is disconnected. Any clues?
> > >
> > > David Koski
> >
> > David and List,
> > I am having the same problem.
> > I have an * box at my house with 1 zap (pstn on a X100p clone from digit
> > networks) channel and one sip(linksys ATA).  I am getting ring on the ATA
> > but there is no call comming in from the pstn.  The following is the CLI
> > output when this happens.  I know that there is no call on the pstn
> > because i have an "emergency phone"(frequent power outages) still
> > connected to the PSTN parallel to the * box and it never rings. All the
> > SIP stuff is on an internal lan only.  I only call out on PSTN since all
> > I have available here in nowheare land is dial up :-(  All work
> > flawlessly except for this one problem.
> >
> > - Starting simple switch on 'Zap/1-1'
> > Jul  8 13:49:23 NOTICE[6150]: chan_zap.c:5405 ss_thread: Got event 2
> > (Ring/Answered)...
> >     -- Executing Dial("Zap/1-1", "sip/677|35") in new stack
> >     -- Called 677
> >     -- SIP/677-55a8 is ringing
> >   == Spawn extension (default, s, 1) exited non-zero on 'Zap/1-1'
> >     -- Hungup 'Zap/1-1'
> > Is there anything for Zap like sip debug? My first guess is that I am
> > getting some sort of blip in ring voltage on the PSTN but have no way to
> > prove this. As a posible logic check I unplugged from PSTN, which put zap
> > into Red alarm of course, and then i get no phantom calls.  Is there
> > something in the zap driver that shuts down when in red alarm?
> > Any Ideas?
>
> Try this in zapata.conf for fun:
> busydetect=yes
> busycount=6
>
> Let us know if it makes a difference.
I have added this to zapata.conf.  Will let you know what happens.  can you 
tell me why this might help or point me to a wiki/google?