Remote agent with Survey campaign

I am trying to setup a remote agent to take calls from a survey campaign. I have added the following lines to extensions.conf:
The Asterisk CLI gives the following output, and it just keeps going:
-- Got 0ms silence< 2000ms required
-- Got 0ms silence< 2000ms required
-- Got 0ms silence< 2000ms required
-- Got 0ms silence< 2000ms required
-- Got 0ms silence< 2000ms required
- Code: Select all
exten => 8321,1,Playback(85109999)
exten => 8321,2,AGI(VD_amd_post.agi,${EXTEN})
exten => 8321,3,Playback(85109999)
exten => 8321,4,Hangup
The Asterisk CLI gives the following output, and it just keeps going:
-- Got 0ms silence< 2000ms required
-- Got 0ms silence< 2000ms required
-- Got 0ms silence< 2000ms required
-- Got 0ms silence< 2000ms required
-- Got 0ms silence< 2000ms required