[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?
>
> Going from memory only (which might be less then accurate), the busycount
> parameter essentially extends zap detect time. The comments in zapata.conf
> refer to detecting busy tone, but something from past memory says the
> parameter affects more then just busy tone detection.
>
> The default value is 4 but I've been using 6 or at least a year with
> an x100p followed by a TDM04b, and I don't have the false ring issues.
>
> Sure wish I would have kept a diary of config changes over the last
> two years rather then rely on memory. It would have been helpful
> more than once. :(
>
Well I added these settings to zapata.conf and am still getting the phantom 
rings, 2 so far this morning!  have been watching ztmonitor and am seeing 
that that rx audio level is showing a constant ###* with an rx gain setting 
of -7.5 in zapata.conf.  If i set gain much less it gets hard to hear voice 
from callers.  With gain at 0.0 i get ########* with some peaks above this.  
Is this normal?
John M