My provider is Babytel, in Canada.

I am switching from Asterisk to Freeswitch.  In Asterisk, I have the registration working.  Porting to Freeswitch it is not clear to achieve:

Note from Babytel:
" Please note that babyTEL requires the use of the Outbound-Proxy feature now available in most new Asterisk versions. Also all SIP messages must be sent to the outbound proxy server nat.babytel.ca to UDP port 5065, but the Domain/Realm must remain sip.babytel.ca in the SIP headers. "
http://ca.babytel.net/wp-content/manuals/Asterisk_babyTEL_Configuration_Guide_(V1.2).pdf

I have tried to use "register-proxy", but the "proxy" seems to be used instead when registering
(sofia status shows data:  sip:16477240904@nat.babytel.ca:5065).

Here is the profile I am using, but is not registering (not using sip.babytel.ca:5060):

<include>
   <gateway name="sip.babytel.ca">
     <param name="username" value="16477270904"/>
     <param name="auth-username" value="16477270904"/>
     <param name="from-user" value="16477270904"/
     <param name="from-domain" value="sip.babytel.ca"/>
     <param name="password" value="xxxxxxx"/>
     <param name="extension" value="16477270904"/>
     <param name="proxy" value="nat.babytel.ca:5065"/>
     <param name="register-proxy" value="sip.babytel.ca:5060"/>
     <param name="register" value="true"/>
   </gateway>
</include>
Any help would be most appreciated.
Thank you,
Ian.