[asterisk-users] Problems Connecting Two Asterisk Installs ViaISDN PRI Cards

[Wai Wu]

Have you tried to load the driver with ec disable? Last time (long time
ago) when I was working on a quad card, we weren't able to get ec to
work with hardware ec on.

________________________________

From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Brian
Alexander
Sent: Thursday, September 27, 2007 10:59 AM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: Re: [asterisk-users] Problems Connecting Two Asterisk Installs
ViaISDN PRI Cards


Okay. I ordered a commercially made T1 crossover cable, connected all of
the cables and rebooted both computers. 

I no longer get the 'Got S-frame while link down' or 'HDLC Bad FCS'
errors. However, I still receive the series of 'Detected alarm on
channel NN: Red Alarm' and 'Unable to disable echo cancellation on
channel NN'. Followed by the alarms clearing. 

At this point I am confident that the cabling is not the problem. I have
included my zaptel and zapata conf files again below. 

Is there a way to make the second TE120P card pass on the timing
received from the first? (rather than using software timing for the
pri_net signalling) 

The errors all seem to be about echo cancellation... What do I need to
do to force asterisk to never disable echo cancellation?

Thanks again for all of the help. Even though we have not found a
solution yet I appreciate the help - and am still confident we will
succeed! 

-Brian



Machine1
=========

zaptel.conf
-----------
defaultzone=us
loadzone=us
span=1,1,0,esf,b8zs
bchan=1-23
dchan=24

span=2,0,0,esf,b8zs
bchan=25-47
dchan=48

zapata.conf
-----------
[trunkgroups]
[channels]
group=1
context=fromtelco
signalling=pri_cpe
switchtype=national
channel=>1-23

group=1
context=frommachine2
signalling=pri_net
switchtype=national
channel=>25-47

Machine2
=========

zaptel.conf
-----------
defaultzone=us
loadzone=us
span=1,1,0,esf,b8zs
bchan=1-23
dchan=24

zapata.conf
-----------
[trunkgroups]
[channels]
group=1
context=frommachine1
signalling=pri_cpe
switchtype=national
channel=>1-23

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