Cannot get simple internal working

I am having some real trouble with this Asterisk and I am finding parts of the manual ambiguous so thought I would get some straight forward answers from this forum.

I have two SIP phones, both of their server addresses set back to my Asterisk server (one on extension 1000 and the other on extension 2000). All I want to do at the moment is to be able to dial internally from phone extension 1000 to phone extension 2000 and vice versa.

In asterisk performing a “sip show channels” shows them both, for example for one of them:
192.168.254.133 (none) d9bbec1e-c57ea2 0x0 (nothing) No Rx: REGISTER

This to me does not look like they are registered properly with the Asterisk server. What does the above line mean? My sip.conf shows the following:

[general]

[1000]
type=friend
context=phones
host=dynamic

[2000]
type=friend
context=phones
host=dynamic

The dialplan settings in extensions.conf are then:

[phones]
exten => 1000,1,Dial(SIP/1000)
exten => 2000,1,Dial(SIP/2000)

Could someone please help me with this and let me know what I am doing wrong?

[quote]In asterisk performing a “sip show channels” shows them both, for example for one of them:
192.168.254.133 (none) d9bbec1e-c57ea2 0x0 (nothing) No Rx: REGISTER[/quote]

The device at …133 recently tried to register and may have succeeded.

sip show peers and sip show users will be more instructive.