"Dial" Application Not Installed?????

I was trying to set up an extension so that SIP user 1000 could call user 1001 by dialing an extension using the Dial() command in extensions.conf. However, it appears that the Dial application wasn't installed?

(Using core show applications from the CLI)

ControlPlayback:
DateTime:
DBdel:
DBdeltree:
DeadAGI: Executes AGI on a hungup channel
Dictate:
Directory:
DISA:
DumpChan:
EAGI: Executes an EAGI compliant application

...definitely not there. Perhaps it was part of Zaptel, although it seems strange to me that Dial wouldn't be installed as a SIP-only configuration seems like it would be fairly common, and not dependent on FXS/FXO analog channels.

Right now I'm trying to find out how to install it.