[Asterisk-Users] chan_capi + mISDN + Fritz PTP

[Ralf Schlatterbeck]

I'm now up&running with
- mISDN with avmfritz driver for Fritz PCI card
- chan_capi from debian recompiled with a patch (see below)
- EuroISDN with Point-to-Point (ptp) mode (Austria)
- With Asterisk 1.0.7-BRIstuffed-0.2.0-RC7k from debian sarge

But am having some problems:
1) I needed to patch chan_capi.c from debian sarge (see below) to give
   the new channel to asterisk in state AST_STATE_RING instead of
   AST_STATE_DOWN. I just did the same for PTP as is done for PTM (point
   to multipoint) in the code and it works (sort of) for me. If I leave
   it in AST_STATE_DOWN, the call is never seen by asterisk and the
   caller gets a failure indication.
   Is this patch really necessary or am I missing something obvious in
   my dialplan??
2) Callers *always* get a ringing indication -- even if the line is busy
   and Asterisk thinks (and logs to call data record) a busy call:
   From cdr-csv;
   "","0650XXXXXXX","12","default","0650XXXXXXX","CAPI[contr1/12]/3","Zap/3-busy-145280440","Busy","","2005-06-01 21:53:43",,"2005-06-01 21:53:53",10,0,"BUSY","DOCUMENTATION"
   From messages:
   Jun  1 21:53:43 DEBUG[2694]: Driver for channel 'CAPI[contr1/12]/3' does not support indication 5, emulating it
   Seems like asterisk tried to set the correct indication (busy) and
   failed?? The result is that the caller gets a ringing indication
   instead of busy.
   Note, I even set up an extension that should *always* indicate busy
   to the caller (see extensions.conf extension 13 below) -- I know that
   Playtones needs an "accept" first but I don't want the caller to be
   charged for my busy tone :-) But the Busy application should do the
   right thing??
   Maybe this has something to do with my patch in 1) ??
   Or is something wrong with my capi.conf (see below)?
3) I'm getting the DID-Information from ISDN as an MSN-Number, in the
   cdr-log above I dialled my own number with extension -12. In
   capi.conf I have:
   [general]
   nationalprefix=0
   internationalprefix=00
   rxgain=0.8
   txgain=0.8

   [interfaces]
   isdnmode=ptp
   msn=0,11,16,23
   incomingmsn=*
   controller=1
   softdtmf=1
   accountcode=
   context=default
   mode=immediate
   devices=2

   Note that I need to specify all the extensions I use in the msn=
   line, otherwise I cannot dial out with these extensions.
4) I'm not always getting DID-Information, even if the caller dialled an
   extension. I can't confirm or reproduce this yet, the net-effect is
   that these calls always end up in the default (s) extension.

Please don't tell me that PTP will not work with the Fritz card -- this
is only true for the closed-source Fritz driver.

Dialplan for incoming calls:
[extern]
exten => 0,1,Noop()
exten => 0,2,Noop(0)
exten => 0,3,Dial(${UNTEN})
exten => 0,4,Busy()
exten => 0,104,Busy()
exten => 11,1,Noop()
exten => 11,2,Noop(11)
exten => 11,3,Dial(${UNTEN})
exten => 11,4,Busy()
exten => 11,104,Busy()
exten => 13,1,Noop()
exten => 13,2,Noop(13)
exten => 13,3,Playtones(busy)
exten => 13,4,Busy()
exten => 13,104,Busy()
exten => s,1,Noop()
exten => s,2,Noop(s)
exten => s,3,Dial(${UNTEN})
exten => s,4,Busy()
exten => s,104,Busy()

[default]
include => extern


Patch for chan_capi.c:
--- asterisk-chan-capi-0.3.5/chan_capi.c        2005-05-17 13:29:28.000000000 +0200
+++ asterisk-chan-capi-0.3.5-modified/chan_capi.c       2005-06-02 08:38:32.000000000 +0200
@@ -2020,7 +2020,8 @@
                                    ast_pthread_mutex_init(&(p->lock),NULL);
                                    i->mypipe = p;
                                    if (i->isdnmode) {
-                                       p->c = capi_new(i,AST_STATE_DOWN);
+                                       p->c = capi_new(i,AST_STATE_RING);
+                                       //p->c = capi_new(i,AST_STATE_DOWN);
                                        i->state = CAPI_STATE_DID;
                                    } else {
                                        p->c = capi_new(i,AST_STATE_RING);


-- 
Ralf Schlatterbeck
email: ralf at zoo.priv.at FAX: +43/2243/26465/23