Error I'm receiving,   number obfuscated,  this isn't literal.
--------------------------
voip-ep*CLI> dial 9256348XXXX
[Apr  9 19:24:09] WARNING[12161]: chan_oss.c:682 setformat: Unable to re-open DSP device /dev/dsp: No such file or directory
[Apr  9 19:24:09] WARNING[12162]: pbx.c:2481 __ast_pbx_run: Channel 'Console/dsp' sent into invalid extension '9256348XXXX' in context 'lookupdundi', but no invalid handler
 << Hangup on console >>
--------------------------------

setup on caller
-------------------
[default]
exten => _9NXXNXXXXXX,1,Goto(lookupdundi|${EXTEN}|1)

~~~~~~~~~~~~~~~~~~~~

[lookupdundi]
switch => DUNDi/priv

---------------------


Dundi host 
--------------------
[incomingdundi]
exten = 4010,1,GoTo(default|4010|1)
exten = 4011,1,GoTo(default|4011|1)
exten = 4012,1,GoTo(default|4012|1)
exten = 4013,1,GoTo(default|4013|1)
exten = 4014,1,GoTo(default|4014|1)
exten = 4015,1,GoTo(default|4015|1)
exten = 4016,1,GoTo(default|4016|1)
exten = 4017,1,GoTo(default|4017|1)
exten = 4018,1,GoTo(default|4018|1)
exten = 4020,1,GoTo(default|4020|1)
exten = 4021,1,GoTo(default|4021|1)
exten = 4022,1,GoTo(default|4022|1)
exten = 4023,1,GoTo(default|4023|1)
exten = 4024,1,GoTo(default|4024|1)
exten = 4025,1,GoTo(default|4025|1)
exten = 4026,1,GoTo(default|4026|1)
exten = 4027,1,GoTo(default|4027|1)
exten = 4028,1,GoTo(default|4028|1)
exten = 4000,1,GoTo(default|4000|1)
exten = _9NXXNXXXXXX,1,GoTo(numberplan-custom-1|${EXTEN}|1)

[numberplan-custom-1]
plancomment = Adesso
include = default
include = parkedcalls
exten = _9NXXXXXX,1,Macro(trunkdial,${trunk_1}/${EXTEN:1})
comment = _9NXXXXXX,1,Local,standard
exten = _9847NXXXXXX,1,Macro(trunkdial,${trunk_1}/${EXTEN:4})
comment = _9847NXXXXXX,1,Local,standard
exten = _911,1,Macro(trunkdial,${trunk_1}/${EXTEN:0})
comment = _911,1,911,standard
exten = _91847NXXXXXX,1,Macro(trunkdial,${trunk_1}/${EXTEN:5})
comment = _91847NXXXXXX,1,Local,standard
exten = _91NXXNXXXXXX,1,Macro(trunkdial,${trunk_1}/${EXTEN:1})
comment = _91NXXNXXXXXX,1,Longdistance,standard
exten = _9NXXNXXXXXX,1,Macro(trunkdial,${trunk_1}/1${EXTEN:1})
comment = _9NXXNXXXXXX,1,Longdistance,standard
exten = _9011XXXXXXXX!,1,Macro(trunkdial,${trunk_1}/${EXTEN:1})
comment = _9011XXXXXXXX!,1,International,standard
exten = t,1,Congestion


----------------------

I can make calls via the remote box from that box locally,  dundi will not pass this call...  Dundi will however pass the extensions listed without trouble...