[asterisk-users] Tips for installing and configuring Digum cards

[A J Stiles]

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.