[asterisk-users] dtmf / misdn

[Hans Witvliet]

Hi all,

Perhaps someone can give me a hint i  the right direction...

Sometimes dtmf is recognized, sometimes not.
I'm using 1.2.19 asterisk with misdn for my hfc card.
When i got in incoming sip-call, dtmf is recognized,
When i phone my self (isdn-phone or gsm-phone) no problem with dtmf
When SOME (not all) people phone me (isdn-incoming) DTMF is not
recognized.
How come?

Either it works for a particular configuration, or it doesn't.
It doesn't make sense to me that it works sometimes...

Hans