Hello Juha,
The ENUM prefix for France +33 (3.3.e164.arpa) does not work, it is delegated but the servers do not answer and the resolver times-out in 12-20 seconds. If you prefer to do ENUM look-ups before going to normal PSTN this affect SIP call flows.
Do you have any idea how to work around this problem? Besides fixing the DNS server side :)
Regards, Adrian