[asterisk-users] Asterisk with Nextone using H323

[Everton Goularth]

Hi people,

Someone have already used asterisk with Nextone?
I`m trying to use it, but there are some problems.. One of these are 
when we set up a connection between Nextone and Asterisk using H323, we 
use our asterisk server as a Softswitch in the Nextone configuration, so 
it doesn`t work. But, when we just change (in Nextone configuration) 
from Softswitch to Gateway, it work. Where is the difference?
I`m using chan_ooh323 in my asterisk server. This is my ooh323.conf:

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[general]
;Default - 1720
;port=1720
bindaddr= IP_ADDRESS

;This parameter indicates whether channel driver should register with
;gatekeeper as a gateway or an endpoint.
;Default - no
;gateway=yes

;Whether asterisk should use fast-start and tunneling for H323 connections.
;Default - yes
;faststart=no
;h245tunneling=no

;H323-ID to be used for asterisk server
;Default - Asterisk PBX
h323id=GW2
e164=1521#

;CallerID to use for calls
;Default - Same as h323id
callerid=MediaXChange 1.0

;Whether this asterisk server will use gatekeeper.
;Default - DISABLE
;gatekeeper = DISCOVER
;gatekeeper = a.b.c.d
;gatekeeper =  189.44.163.125

logfile=/var/log/asterisk/h323_log
context=default
disallow=all
allow=g729
allow=g723
dtmfmode=rfc2833

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Anyone know what can I do? or what am I doing wrong???
Thank`s a lot for the opportunity.
Everton Goularth