asterisk users - Sep 2005 - Sipura-2002 Can not make outgoing calls, incoming calls works OK

Sipura-2002 CAN NOT dial out, incoming call works OK.
I just got a new Sipura-2002 to my collection (I have few Sipura-3000
units that work OK). 
I setup the unit, Sipura-2002 to register with Asterisk and it
registered OK. 
The unit will accept the call but I can not make a call out. 
My sip.conf entry: 
[SPA-2] ; incoming/outgoing calls on FXS Sipura-2002-Line1 ext.711 
type=friend 
secret=711 
username=711 
mailbox=711 
host=dynamic 
port=5068 ; port on FXS line 
dtmfmode=rfc2833 
nat=no 
context=incoming 
callgroup=1 
pickupgroup=1 

Dial Plan on Sipura-2002: 
(xx.|*xx.|#xx.) (this dial plan works OK on Sipura-3000) 

I tried to compare the setup of 2002 unit to 3000 but I can not find
anything that would be blocking outgoing calls. 
The firmware on Sipura-2002: 
Software Version:3.1.5

When I try to make a call out the asterisk is not registering anything
from the unit. I can not figure out why.

-- 
#Joseph