Sip channel not registered

I have installed the beta with asterisk 1.4. I am not able to dial between extensions. I can leave voice mail and pick-up voice mail.

The log shows me the following:

[Jul 15 12:14:05] WARNING[10995] channel.c: No channel type registered for ‘SIP’
[Jul 15 12:14:05] WARNING[10995] app_dial.c: Unable to create channel of type ‘SIP’ (cause 66 - Channel not implemented)
[Jul 15 12:14:05] WARNING[10995] func_db.c: DB requires an argument, DB(/)

How would I fix this?

this looks like you have a problem in your asterisk installation. At the cli, type show channeltypes and I suspect you will not see SIP listed. If you loaded asterisk from a standard tarball distro, you should be able to type ‘make install’ to get everything installed.

Thank you for the quick reply. You were right, with show channeltypes the SIP channel was not present.
I reinstalled from the tarball and that fixed it.