[asterisk-users] How to Busy signals on DAHDI
rmudgett at digium.com
Tue Feb 4 11:22:06 CST 2014
On Tue, Feb 4, 2014 at 10:56 AM, Olivier <oza.4h07 at gmail.com> wrote:
> On a Asterisk 1.6.1 powered system, I've just discovered that using
> Busy() application in dialplan was no enough to send a Busy signal on
> incoming Dahdi channel.
> On this specific install, adding an Answer()) and a Playtone() statement
> in dialplan triggered sending of busy tone but I'm still surprised by my
> Should I expect public switch to send a Busy tone to caller whenever
> Asterisk triggers Busy app or did I miss something ?
It depends upon what kind of DAHDI channel. If it is an analog FXS/FXO
you have to answer for the busy tone to be heard by the caller because as
far as the
telco is concerned it delivered a call to a non-busy line. If it is an ISDN
channel then it depends upon what you have the priindication option set
priindication=outofband then a busy cause code is sent to the network and
is hung up. With priindication=inband then a busy tone is sent after a
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