Okay. I ordered a commercially made T1 crossover cable, connected all of the cables and rebooted both computers. <br><br>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.
<br><br>At this point I am confident that the cabling is not the problem. I have included my zaptel and zapata conf files again below. <br><br>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)
<br><br>The errors all seem to be about echo cancellation... What do I need to do to force asterisk to never disable echo cancellation?<br><br>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!
<br><br>-Brian<br><br><br><br>Machine1<br>=========<br><br>zaptel.conf<br>-----------<br>defaultzone=us<br>loadzone=us<br>span=1,1,0,esf,b8zs<br>bchan=1-23<br>dchan=24<br><br>span=2,0,0,esf,b8zs<br>
bchan=25-47<br>
dchan=48<br><br>zapata.conf<br>-----------<br>
[trunkgroups]<br>[channels]<br>group=1<br>context=fromtelco<br>signalling=pri_cpe<br>switchtype=national<br>channel=>1-23<br><br>group=1<br>
context=frommachine2<br>
signalling=pri_net<br>
switchtype=national<br>
channel=>25-47<br>
<br>Machine2<br>
=========<br>
<br>
zaptel.conf<br>
-----------<br>
defaultzone=us<br>
loadzone=us<br>
span=1,1,0,esf,b8zs<br>
bchan=1-23<br>
dchan=24<br><br>zapata.conf<br>
-----------<br>[trunkgroups]<br>[channels]<br>
group=1<br>
context=frommachine1<br>
signalling=pri_cpe<br>
switchtype=national<br>
channel=>1-23<br>