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[anomatos at gmail.com]

Hello everyone,

I'm using very simple setup to make and receive external ISDN calls through a
softphone (x-lite version 3.0 - Win32) via an asterisk box.

Hardware setup:

- Dialogic Diva BRI (lspci yields: Network controller: Eicon
Technology Corporation DIVA Server BRI-2M/-2F (rev 01))
- ISDN BRI line

Software setup:

- Redhat 9
- asterisk-1.4.16.2
- chan_capi-1.0.2

Asterisk configuration files are as follows:

/etc/asterisk/capi.conf
[general]
nationalprefix=0
internationalprefix=0030
rxgain=1.0 ;linear receive gain (1.0 = no change)
txgain=1.0 ;linear transmit gain (1.0 = no change)
language=de ;set default language

[ISDN1]
isdnmode=msn ;'MSN' (point-to-multipoint) or 'DID' (direct inward dial)
incomingmsn=* ;allow incoming calls to this list of MSNs/DIDs, * = any
controller=1 ;capi controller number of this interface/port
group=1 ;dialout group
softdtmf=on ;enable/disable software dtmf detection,
recommended for AVM cards
relaxdtmf=on ;in addition to softdtmf, you can use relaxed
dtmf detection
faxdetect=off ;enable faxdetection and redirection to EXTEN
'fax' for incoming and/or
accountcode= ;PBX accountcode to use in CDRs
context=capi-in ;context for incoming calls
echocancelold=yes;use facility selector 6 instead of correct 8
(necessary for older eicon drivers)
devices=2 ;number of concurrent calls (b-channels) on this controller

/etc/asterisk/extensions.conf
[general]
autofallthrough=yes

[capi-in]
;calls from isdn interface card
exten => 2104999999,1,Answer()
exten => 2104999999,n,Dial(SIP/1000)
exten => 2104999999,n,Hangup()

[internal]
;calls from internal sip phones
exten => _210XXXXXXX,1,Dial(CAPI/ISDN1/${EXTEN})
exten => _210XXXXXXX,n,Congestion()
exten => _210XXXXXXX,n,Hangup()
/etc/asterisk/sip.conf
[1000]
type=friend
context=internal
host=dynamic

For inbound calls, eveything works smoothly; I can receive calls on the
softphone successfully.

For outbound calls(PSTN), the number is called successfully and the phone rings
on the other end:

-- Registered SIP '1000' at 192.168.0.6 port 35884 expires 3600
-- Executing [2104988888 at internal:1] Dial("SIP/1000-081daa48",
"CAPI/ISDN1/2104988888") in new stack
-- Called ISDN1/2104988888
-- CAPI/ISDN1#02/2104988888-0 is proceeding passing it to SIP/1000-081daa48
-- CAPI/ISDN1#02/2104988888-0 is making progress passing it to
SIP/1000-081daa48
-- CAPI/ISDN1#02/2104988888-0 is ringing

[armin at melware.de]

On Sat, 12 Jan 2008, Antonios Tsakiridis wrote: