[Asterisk-Users] HDLC link unstable, yellow alarm on

[janvb at caselaboratories.com]

This depends on the type of signalling you use!

ISDN uses only 1 D channel that is chan 16 for EuroISDN. All other 
variants of ISDN (Q.Sig, 1TR, DPNSS, PSS1 etc) I know do the same. 
SS7/C7 is a different story as they can use up to 30 'links', but the 
most common is actually still 1 link at channel 16.

jvb
Andrew Latham wrote:

>If I remember correctly an E1 has two D-Channels. Check your notes on
>what channels 31, 32 really do.....
>
>On 12/7/05, Laszlo Megyer <laszlo.megyer at gmail.com> wrote:
>  
>
>>Hey folks,
>>
>>I have my linuxbox connected to a PBX through a digium te110p card, E1 line.
>>The asterisk is set up to be the timing master for the line.
>>
>>recently run into the following error message when starting asterisk:
>>
>>The message:
>>---------
>>  == Primary D-Channel on span 1 down
>>Dec  7 11:34:02 WARNING[1105]: chan_zap.c:2282 pri_find_dchan: No
>>D-channels available!  Using Primary channel 16 as D-channel anyway!
>>  == Primary D-Channel on span 1 up
>>
>>Also the yellow alarm is not cleared on the PBX side. Any
>>recommendations for the problem?
>>
>>
>>Or should I use Tie-line connection between the PBX and asterisk somehow?
>>
>>thanks,
>>lez
>>
>>config files follow:
>>
>>
>>
>>my /etc/zaptel.conf:
>>-------------------8<-----------
>>span=1,0,0,ccs,hdb3
>>bchan=1-15,17-31
>>dchan=16
>>
>>my /etc/asterisk/zapata.conf:
>>----------------8<-------------------
>>[trunkgroups]
>>
>>[channels]
>>
>>spanmap => 1,1,1
>>
>>usecallerid=yes
>>hidecallerid=no
>>language=en
>>callwaiting=no
>>threewaycalling=yes
>>transfer=yes
>>echocancel=yes
>>echotraining=yes
>>callreturn=yes
>>
>>rxgain=0.0
>>txgain=0.0
>>
>>callgroup=1
>>pickupgroup=1
>>
>>immediate=no
>>
>>
>>; LOCAL CONFIGS:
>>context = internal
>>
>>signalling = pri_net
>>group = 1;
>>channel => 1-15,17-31
>>
>>switchtype = national
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>>    
>>
>
>
>--
>---
>Andrew Latham - AKA: LATHAMA (lay-th-ham-eh)
>lathama at lathama.com - lathama at yahoo.com - lathama at gmail.com
>If any of the above are down we have bigger problems than my email!
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