[asterisk-bugs] [Asterisk 0014031]: [patch] "pri_find_dchan: No D-channels available!" error on console when using wcb4xxp

[Asterisk Bug Tracker]

A NOTE has been added to this issue. 
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https://issues.asterisk.org/view.php?id=14031 
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Reported By:                sruffell
Assigned To:                
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Project:                    Asterisk
Issue ID:                   14031
Category:                   Channels/chan_dahdi
Reproducibility:            always
Severity:                   major
Priority:                   normal
Status:                     acknowledged
Asterisk Version:           SVN 
Regression:                 No 
SVN Branch (only for SVN checkouts, not tarball releases):  trunk 
SVN Revision (number only!): 160386 
Request Review:              
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Date Submitted:             2008-12-08 14:55 CST
Last Modified:              2009-06-17 04:16 CDT
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Summary:                    [patch] "pri_find_dchan: No D-channels available!"
error on console when using wcb4xxp
Description: 
When a wcb4xxp is connected as a BRI span in TE mode, you get errors like:

[Dec 2 22:02:48] WARNING[4759]: chan_dahdi.c:3008 pri_find_dchan: No
D-channels available! Using Primary channel 6 as D-channel anyway!
[Dec 2 22:02:49] WARNING[4758]: chan_dahdi.c:3008 pri_find_dchan: No
D-channels available! Using Primary channel 3 as D-channel anyway!
[Dec 2 22:03:19] WARNING[4759]: chan_dahdi.c:3008 pri_find_dchan: No
D-channels available! Using Primary channel 6 as D-channel anyway!

On your asterisk console and in your asterisk log. 
======================================================================
Relationships       ID      Summary
----------------------------------------------------------------------
has duplicate       0014617 HFC-s card cannot initiate outgoing calls
related to          0012757 [branch] when BRI span go down cannot m...
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 (0106542) nenadr (reporter) - 2009-06-17 04:16
 https://issues.asterisk.org/view.php?id=14031#c106542 
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@ timking: Yes NT1 box - box where I connect asterisk bri-card ports.
Typical setup is like: Telco ->(U-bus/2 wire) NT1Box -> (S/T bus 4 wire,
usualy there are 2 ports on it, also provides termination to S/T bus)
multiply ISDN TA devices (ISDN phones / ISDN cards in asterisk in TE mode).


This is typical setup here in Serbia, and I saw it also in Austria,
Switzerland and in some cases in Germany.

And yes card in asterisk is in bri_cpe_ptmp mode (which is TE mode), and
most of the time everything is working OK.

relevant part of my /etc/dahdi/system.conf:
span=1,1,0,ccs,ami
span=2,2,0,ccs,ami
span=3,3,0,ccs,ami
span=4,4,0,ccs,ami
bchan=1,2,4,5,7,8,10,11
hardhdlc=3,6,9,12
alaw=1,2,4,5,7,8,10,11
echocanceller=oslec,1,2,4,5,7,8,10,11

and from /etc/asterisk/chan_dahdi.conf:

context=from-pstn
switchtype=euroisdn
pridialplan=unknown
prilocaldialplan=unknown
internationalprefix = 00
nationalprefix = 0
localprefix = 011
;privateprefix = 011
unknownprefix =
priindication = outofband
facilityenable = yes
usecallerid=yes
hidecalleridname=yes
usecallingpres=yes
transfer=yes
canpark=yes
cancallforward=yes
callreturn=yes
echocancel=yes
echocancelwhenbridged=no
echotraining=no
callgroup=1
callerid=asreceived
mohinterpret=default
mohsuggest=default
group=1
signalling=bri_cpe_ptmp
channel =>1-2
group=2
signalling=bri_cpe_ptmp
channel =>4-5
group=3
signalling=bri_cpe_ptmp
channel =>7-8
group=4
signalling=bri_cpe_ptmp
channel =>10-11 

Issue History 
Date Modified    Username       Field                    Change               
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2009-06-17 04:16 nenadr         Note Added: 0106542                          
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