hi folks. i recently setup an Asterisk system in Hong Kong. their phone company told me that their T1 PRI switch type is Primary-NTT. however in chan_dahdi.conf there's no such option. i have it set to national. it worked fine for a while, but now suddenly stop working. in coming call just keep ringing and didn't even show up on console. out going call hang up immediately with cause code 27. (as usual, phone co. just said it's problem with our equipment without giving us any detail). anybody have any suggestions? here's our /etc/dahdi/system.conf: loadzone=hk defaultzone=hk span=1,1,0,esf,b8zs bchan=1-23 dchan=24 span=2,0,0,esf,b8zs bchan=25-47 dchan=48 span=3,0,0,esf,b8zs bchan=49-71 dchan=72 span=4,0,0,esf,b8zs bchan=73-95 dchan=96 /etc/asterisk/chan_dahdi.conf: switchtype=national pridialplan=unknown prilocaldialplan=unknown internationalprefix = 001 nationalprefix unknownprefix signalling=pri_cpe usecallerid=yes usecallingpres=yes echocancel=no echocancelwhenbridged=no group=1 callgroup=1 pickupgroup=1 faxdetect=incoming context=pri_in channel => 1-23
Your carrier is apparently using a Japanese switch (at least it's a Japanese
standard).
If you don't get a good answer from the list, you might send an email to
louis.leclerc at denphone.com. Denphone is a company installing Asterisk
systems in Tokyo.
--Don
-----Original Message-----
From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Edwin Lam
Sent: Sunday, January 06, 2013 3:18 AM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: [asterisk-users] PRI (Primary-NTT)
hi folks.
i recently setup an Asterisk system in Hong Kong. their phone
company told me that their T1 PRI switch type is Primary-NTT.
however in chan_dahdi.conf there's no such option. i have it
set to national. it worked fine for a while, but now suddenly
stop working. in coming call just keep ringing and didn't
even show up on console. out going call hang up immediately
with cause code 27. (as usual, phone co. just said it's
problem with our equipment without giving us any detail).
anybody have any suggestions?
here's our /etc/dahdi/system.conf:
loadzone=hk
defaultzone=hk
span=1,1,0,esf,b8zs
bchan=1-23
dchan=24
span=2,0,0,esf,b8zs
bchan=25-47
dchan=48
span=3,0,0,esf,b8zs
bchan=49-71
dchan=72
span=4,0,0,esf,b8zs
bchan=73-95
dchan=96
/etc/asterisk/chan_dahdi.conf:
switchtype=national
pridialplan=unknown
prilocaldialplan=unknown
internationalprefix = 001
nationalprefix unknownprefix signalling=pri_cpe
usecallerid=yes
usecallingpres=yes
echocancel=no
echocancelwhenbridged=no
group=1
callgroup=1
pickupgroup=1
faxdetect=incoming
context=pri_in
channel => 1-23
--
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Edwin wrote:> i recently setup an Asterisk system in Hong Kong. their phone > company told me that their T1 PRI switch type is Primary-NTT. > however in chan_dahdi.conf there's no such option. i have it > set to national. it worked fine for a while, but now suddenly > stop working. in coming call just keep ringing and didn't > even show up on console. out going call hang up immediately > with cause code 27. (as usual, phone co. just said it's > problem with our equipment without giving us any detail). > anybody have any suggestions?The last PRI I setup in Hong Kong was configured as a Primary-Net5, which maps to euroisdn in DAHDI. That was eight years ago, so things may have changed, but it is worth a try. You should also collect some Q.931 logs, as I have seen silly things like caller-id formatting cause calls to be rejected. Sadly I cannot tell you how to accomplish that with DAHDI... Dan