>>>Usually, channels 1-15 and 17-31 are B-channels and 16 is the D-channel;
We don't use E1s here in the USA.
I just finished installing a PRI line, and being a complete novice at it myself, this is what I wish someone had told me:
- 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
#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
- 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.
Hope it helps
-
Christian Savinovich
VoIP & Telephony Consultant
646-982-3572
-------- Original Message --------
Subject: Re: [asterisk-users] Tips for installing and configuring Digum
cards
From: A J Stiles <[email protected]>
Date: Wed, October 10, 2012 1:17 pm
To: "Asterisk Users Mailing List - Non-Commercial Discussion"
<[email protected]>
On Wednesday 10 October 2012, Mitch Claborn wrote:
> I am a complete novice at T1's, etc. What else besides framing and
> coding do I need to ask about?
Ask how numbers come through on incoming calls: in "international" format
(with IDD and STD codes, but without the leading double-zero and zero
respectively); in "full national" format (with STD code including the
leading zero); in "national" format with the STD code *but* with the leading
0 stripped; or just the local number.
Also ask how they want you to send numbers on outgoing calls (in particular,
do you need to insert the STD code even for a local call?)
Then, don't believe a word they say; and use something like
exten => s,1,NoOp(Call to ${EXTEN})
to see how they are _actually_ sending numbers to you. Start out by sending
your numbers in the same format, but don't expect consistency.
Usually, channels 1-15 and 17-31 are B-channels and 16 is the D-channel; but
again, check this with the telco. If your box can't find a D-channel, it won't
work at all.
--
AJS
Answers come *after* questions.
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