[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?
John M