Call status register

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Hi all!

Some time ago I’m using Asterisk (currently 1.8.10.0) at home to manage
the calls. Nothing yet very complex, just something compiled by me using
the source code from the official site of the project and configuring
the files manually to both Asterisk and DAHDI. For now I’m not using any
GUI, but when I have more time, I plan to try something in the future,
for example, to make a statistic of the calls.

But, thinking about the statistics of the calls, in the last days I was
taking a look at the /var/log/asterisk/cdr-csv/Master.csv file, which I
understand is where the calls are registered. But all seem to have a
“ANSWERED” state, even those receiving a busy tone. This happens with
both internal calls between SIP extension and from SIP to PSTN.

A test I did is putting a Grandstream BT200 on DND mode (Do Not Disturb)
and call it from a softphone. While the softphone receives the message
that the extension is busy, the CDR registered the call as “ANSWERED”.

Not sure if it’s something usually due to the way it is configured the
dialplan or any other configuration issue.

Thanks in advance for your reply.

Regards,
Daniel