<html><body><span style="font-family:Verdana; color:#000000; font-size:10pt;"><div>>>><span>Usually, channels 1-15 and 17-31 are B-channels and 16 is the D-channel;</span></div><div><span><br></span></div><div>We don't use E1s here in the USA.</div><div><br></div><div>I just finished installing a PRI line, and being a complete novice at it myself, this is what I wish someone had told me:</div><div><br></div><div>- the dahdi program dahdi_genconf creates 2 files 1) /etc/dahdi/system.conf and 2) /etc/asterisk/dahdi-channels.conf. The latter is the one that maintains the configuration for asterisk. File chan_dahdi.conf is where the configuration is maintain, you will need to have an</div><div><br></div><div>#insert dahdi-channels.conf at the start of chan_dahdi.conf, otherwise it will never be read. Else you can type the configuration yourselft in chan_dahdi.conf<br></div><div><br></div><div>- Not written anywhere, but the way chan_dahdi.conf is read, there are no [XXXX] separators, so any parameters in the file apply to the first "channel" statement it finds.</div><div><br></div><div>Hope it helps</div><div><br></div><div><br></div><div>-<br></div><div><br></div><div>Christian Savinovich</div><div><strong><em>VoIP & Telephony Consultant</em></strong></div><div>646-982-3572</div><div> </div><div><br><br></div>
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-------- Original Message --------<br>
Subject: Re: [asterisk-users] Tips for installing and configuring Digum<br>
cards<br>
From: A J Stiles <<a href="mailto:asterisk_list@earthshod.co.uk">asterisk_list@earthshod.co.uk</a>><br>
Date: Wed, October 10, 2012 1:17 pm<br>
To: "Asterisk Users Mailing List - Non-Commercial Discussion"<br>
<<a href="mailto:asterisk-users@lists.digium.com">asterisk-users@lists.digium.com</a>><br>
<br>
On Wednesday 10 October 2012, Mitch Claborn wrote:<br>
> I am a complete novice at T1's, etc. What else besides framing and<br>
> coding do I need to ask about?<br>
<br>
Ask how numbers come through on incoming calls: in "international" format <br>
(with IDD and STD codes, but without the leading double-zero and zero <br>
respectively); in "full national" format (with STD code including the <br>
leading zero); in "national" format with the STD code *but* with the leading <br>
0 stripped; or just the local number.<br>
<br>
Also ask how they want you to send numbers on outgoing calls (in particular, <br>
do you need to insert the STD code even for a local call?)<br>
<br>
<br>
Then, don't believe a word they say; and use something like<br>
exten => s,1,NoOp(Call to ${EXTEN})<br>
to see how they are _actually_ sending numbers to you. Start out by sending <br>
your numbers in the same format, but don't expect consistency.<br>
<br>
<br>
Usually, channels 1-15 and 17-31 are B-channels and 16 is the D-channel; but <br>
again, check this with the telco. If your box can't find a D-channel, it won't <br>
work at all.<br>
<br>
<br>
-- <br>
AJS<br>
<br>
Answers come *after* questions.<br>
<br>
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