[Asterisk-Users] phantom incomming calls from asterisk

[Rich Adamson]

> > 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.