[asterisk-users] Phantom Calls

Matt mhoppes at gmail.com
Mon Jun 18 15:14:15 CDT 2007


I too have seen what Rob is saying.. on a Sangoma card.   It was an easy fix
in the config, but I don't remember what it was.. but basically it was stray
voltage.

On 6/18/07, Rob Schall <rschall at callone.net> wrote:
>
>  We were having phantom calls as well. In our case, we had 2 pots line
> running in our sangoma card, and when you dial out, would would wait for
> whomever to pickup. If you gave up waiting an hung the phone up (we also had
> 2 normal phones plugged into fxs ports), it wouldn't immediately receive the
> hangup signal. The call would connect, then asterisk would turn around and
> try to call us back. If the other side hungup because they just heard dead
> error, then when you'd repickup your call, it would also be dead air.
>
> Not sure if this is the same case as yours, but ours was odd as well.
> Rob
>
> Lee Jenkins wrote:
>
> Stephen Bosch wrote:
>
>  Lee Jenkins wrote:
>
>  I have a client that is having problems with phantom calls.  I have not
> been able to see it happen myself, but they say when it happens, the
> display on the phone (polycom 301's) says "Device" is calling, but when
> they answer the phone, there is only silence and then they hang back up
> and it sometimes rings again.
>
> I've been trying to track this down for a couple of weeks now with no
> success yet.  If anyone can lend a suggestion or a pointer to look for,
> I would greatly appreciate it.
>
> I've tried using WaitForRing() in case it is bad signaling coming from
> the phone company.  But that has not helped.
>
>  I highly doubt this is the cause. I suspect a dialplan error.
>
> Ask your client if they are doing anything else when this happens, like
> making a fax call ;)
>
>      This setup has:
>
> Asterisk 1.2.17
> Zaptel (whatever was distributed same time as Asterisk 1.2.17)
> CentOS 4.4
> Polycom 301's throughout
> Sangoma A200 with 2 ports connected to PSTN.
>
> Thanks for any help.
>
>  We kinda need to see your dialplan to provide any useful help.
>
> -Stephen-
>
>      Thanks for responding, Stephen.
>
> The client has a fax line, but it is separate line from the Asterisk
> box.  They have 3 lines coming in.  1 goes directly to fax machine and 2
> go to Asterisk box.
>
> I've searched the archives and "phantom ringing" comes up a few times
> without any real resolutions that I can see.
>
> The only thing very different about this installation is that the
> customer has no intermediate IVR.  They want the phones to ring directly
> to a group and if no answer, then go to a mini IVR that asks if they
> would like to hold longer or leave a message.
>
> The "device" calling on CallerID when this happens is the default
> CallerID set in sip.conf Device <callernum> which was never changed.
> That was changed to a correct value. It appears as though the system is
> calling itself.
>
>
> extensions.conf:
>
> [incoming]
> exten=>s,1,WaitForRing(5)
> exten=>s,n,Answer()
> exten=>s,n,Ringing()
> exten=>s,n,SetMusicOnHold(default)
> exten=>s,n,Wait(1)
> exten=>s,n,Goto(check_time,s,1)
>
> [check_time]
> exten=>s,1,Answer()
> exten=>s,2,GotoIfTime(08:30-17:00,mon-fri,*,*,?daytime,s,1)
> exten=>s,3,Goto(after_hours,s,1)
>
> [daytime]
> exten=>s,1,Answer()
> exten=>s,2,Set(TIMEOUT(response)=1)
> exten=>s,3,Dial(${GRP_All},20,tr)
> exten=>s,4,Background(custom/no-answer)
> exten=>1,1,Set(loops=0)
> exten=>1,2,Wait(0.5)
> exten=>1,3,Goto(ring-all-with-moh,s,1)
> exten=>2,1,Voicemail(b116)
> exten=>2,2,Hangup()
> exten=>5,1,Voicemail(b116)
> exten=>5,2,Hangup()
> exten=>555,1,VoicemailMain()
> exten=>i,1,Background(invalid)
> exten=>i,2,Goto(ring-all-with-moh,s,1)
> exten=>t,1,Set(loops=0)
> exten=>t,2,Wait(0.5)
> exten=>t,3,Goto(ring-all-with-moh,s,1)
>
> [ring-all-with-moh]
> exten=>s,1,Answer()
> exten=>s,2,Noop(Loops are: ${loops})
> exten=>s,3,Macro(DialExtenNoVM,116|60|tm)
> exten=>s,4,Set(loops=$[${loops}+1])
> exten=>s,5,GotoIf($["${loops}" >= "2" ]?timeout-from-loop,s,1)
> exten=>s,6,Background(custom/no-answer)
> exten=>1,1,Goto(ring-all-with-moh,s,1)
> exten=>2,1,Voicemail(b116)
> exten=>2,2,Hangup()
> exten=>i,1,Playback(invalid)
> exten=>i,2,Goto(ring-all-with-moh,s,1)
> exten=>t,1,Goto(ring-all-with-moh,s,1)
>
>
> sip.conf:
>
> [general]
>
> allowexternalinvites=yes
> allowguest=no
> autocreatepeer=no
> autodomain=no
> bindaddr=0.0.0.0
> callerid=device <callernum>
> canreinvite=no
> checkmwi=30
> compactheaders=no
> context=incoming
> defaultexpirey=120
> dtmfmode=rfc2833
> dumphistory=no
> externrefresh=30
> ignoreregexpire=no
> insecure=no
> maxexpirey=3600
> musicclass=default
> nat=no
> notifyringing=yes
> pedantic=no
> progressinband=never
> promiscredir=no
> qualify=no
> recordhistory=no
> registerattempts=30
> registertimeout=30
> relaxdtmf=no
> rtautoclear=no
> rtcachefriends=no
> rtpholdtimeout=600
> rtpkeepalive=0
> rtptimeout=3600
> rtupdate=yes
> sendrpid=no
> sipdebug=no
> srvlookup=no
> tos=none
> trustrpid=no
> useclientcode=no
> usereqphone=no
> callevents=no
>
> disallow=all
> allow=ulaw
>
> [116]
> context=super-user
> type=friend
> canreinvite=no
> dtmfmode=rfc2833
> callerid=Barbara <116>
> nat=no
> port=5060
> qualify=no
> secret=xxx
> host=dynamic
> mailbox=116 at default
> disallow=all
> allow=ulaw
>
> [117]
> context=super-user
> type=friend
> canreinvite=no
> dtmfmode=rfc2833
> callerid=Bill <117>
> nat=no
> port=5060
> qualify=no
> secret=xxx
> host=dynamic
> mailbox=117 at default
> disallow=all
> allow=ulaw
>
> [115]
> context=super-user
> type=friend
> canreinvite=no
> dtmfmode=rfc2833
> callerid=George <115>
> nat=no
> port=5060
> qualify=no
> secret=xxx
> host=dynamic
> mailbox=115 at default
> disallow=all
> allow=ulaw
>
> [114]
> context=super-user
> type=friend
> canreinvite=no
> dtmfmode=rfc2833
> callerid=Jack <114>
> nat=no
> port=5060
> qualify=no
> secret=xxx
> host=dynamic
> mailbox=114 at default
> disallow=all
> allow=ulaw
>
>
>
>
>
>
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