Zap Can't Dial Local Extensions

Our analog phone connected to a TDM400P can make outgoing calls, *61 calls, etc. but is unable to call other extensions. Other extensions call call this phone without problems as well.

Here is the output when we try to make a call:

-- Starting simple switch on 'Zap/1-1'
-- Hungup 'Zap/1-1'

That’s the only output we get. This extension is numbered 117 and is unable to call local extensions 2XX or remote IAX2 exteions 4XX.

/etc/asterisk/zapata_additional.conf
;;;;;;[117]
signalling=fxo_ks
record_out=Adhoc
record_in=Adhoc
mailbox=117@device
echotraining=800
echocancelwhenbridged=no
echocancel=yes
context=from-internal
callprogress=no
callerid=Joe User <117>
busydetect=no
busycount=7
accountcode=
channel=>1

/etc/asterisk/zapata.conf
[trunkgroups]

[channels]

language=en
context=from-pstn
signalling=fxs_ks
rxwink=300 ; Atlas seems to use long (250ms) winks

Any idea why this is happening?