asterisk users - Feb 2014 - Strange incoming call issue.

Hi all,

I've got a customer who's reporting "ghost calls."
Essentially, the phone
rings, they pick up, and there's no body there.

It is NOT one-way audio, and it doesn't happen all the time.

We use voipmonitor to watch calls, and this is what we saw for the call in
question:

| calldate            | caller     | called         | duration | whohanged |
+---------------------+------------+----------------+----------------+-----+
| 2014-02-12 09:28:06 | 575xxxxxxx | CCD539F38...-1 |       60 | NULL      |
| 2014-02-12 09:29:06 | 575xxxxxxx | CCD539F38...-2 |        1 | NULL      |

So, it looks like my customer received a call, which lasted a minute, and
then they  hung up.  Then their phone rang again, but there was no one
there.
Based on what I'm seeing in my log, the first call was never hung up, even
though both parties claim to have hung up the call.  My logs only indicate
that the 'h' extension was called once, at 9:29:07

My question is, how can a call not get hung up when both parties hang up
the call?  I know that sounds odd, but that's what I'm seeing.

Any ideas?

Mike.
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About a call not being hang up for asterisk while the client hang up,
please remember SIP is based on UDP and UDP packets get easily lost... they
are retransmitted but sometime they are lost as the previous...

For the ghost calls, are the SIP port of the phones reachable from the
Internet... maybe it is just someone trying to place some free calls

Leandro


2014-02-12 19:05 GMT+01:00 Mike Diehl <mdiehlenator at gmail.com>:
> Hi all,
>
> I've got a customer who's reporting "ghost calls."
Essentially, the phone
> rings, they pick up, and there's no body there.
>
> It is NOT one-way audio, and it doesn't happen all the time.
>
> We use voipmonitor to watch calls, and this is what we saw for the call in
> question:
>
> | calldate            | caller     | called         | duration | whohanged
> |
>
>
+---------------------+------------+----------------+----------------+-----+
> | 2014-02-12 09:28:06 | 575xxxxxxx | CCD539F38...-1 |       60 | NULL
> |
> | 2014-02-12 09:29:06 | 575xxxxxxx | CCD539F38...-2 |        1 | NULL
> |
>
> So, it looks like my customer received a call, which lasted a minute, and
> then they  hung up.  Then their phone rang again, but there was no one
> there.
> Based on what I'm seeing in my log, the first call was never hung up,
even
> though both parties claim to have hung up the call.  My logs only indicate
> that the 'h' extension was called once, at 9:29:07
>
> My question is, how can a call not get hung up when both parties hang up
> the call?  I know that sounds odd, but that's what I'm seeing.
>
> Any ideas?
>
> Mike.
>
>
> --
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