asterisk users - Feb 2006 - Why is asterisk ignoring my context?

Hi,

I've been fighting with a sip configuration for a few days, and I just
realized why it wasn't working.

In my sip.conf, I have the following

[someprovider]
Bla
Bla
Bla
Bla

And in my extensions.conf file, I have this

Exten => 555-555-5555,1,Noop(test)

Sure enough, when I dial 555-555-5555, it works.  What DOESN'T work is if I
use an extension in the sip.conf and extensions.conf.  If I change my
sip.conf file to :

[someprovider]
Bla
Bla
Bla
Context=test

And in my extensions.conf, I add
[test] 

It doesn't work.  Further investigation shows me that if I remove the [test]
context in extensions.conf, It works REGARDLESS of whether I have the
context defined in sip.conf

In other words, it seems like whatever I put in sip.conf as a context for
those incoming calls, Asterisk just tries to find the extension in the
[general] context.

Is this
1) a known bug?
2) a misunderstanding on my part of hos contexts work?
3) a bad dream?

Mike

Do you also have a SIP phone you are dialing from? 
This is what I would have setup:

sip.conf:


[sipphone]
Bla
Bla
Bla
context=local-phones

[someprovider]
Bla
bla
bla
context=someprovider-in

extensions.conf

[local-phones]
exten => 5555555555,1,Noop(test)

[someprovider-in]
exten => s,1,Dial(SIP/sipphone)