[asterisk-users] how to match "no callerid" in 1.6 ?

[Stanisław Pitucha]

2009/7/24 Louis-David Mitterrand <vindex+lists-asterisk-users at apartia.org>:
> This used to work fine in 1.4:
>
>        exten => 2131/,1,NoOp(reject3: ${CALLERID(num)})
>        exten => 2131/,n,Playback(no_unknow_callerid_here)
>        exten => 2131/,n,Hangup
>
> And now, after upgrading to 1.6.1.x it matches every callerid.

I'm not sure if it's the same reason, but have a look at this bug
(exists in 1.6.1.1):
https://issues.asterisk.org/view.php?id=15476
Whether you want to use the function, or a pattern match in version
1.6, you might want to upgrade past revision 206705. Especially if
you're trying to detect no callerid. Otherwise you'll get a wrong
result. (assuming you're using SIP)

HTH