Recursive ENUM Queries

If the Oracle® Enterprise Session Border Controller receives an A-record in response to an ENUM query, it will reperform that ENUM query to the server received in the A-record.

If the Oracle® Enterprise Session Border Controller receives an NS record in response to an ENUM query, it will resend the original ENUM query to the DNS server defined in the realm of the FQDN in the NS record. It will use the response to perform a subsequent ENUM query.

This behavior is configured by setting the recursive query parameter in the enum config to enabled.

Recursive ENUM Queries Configuration

To configure the Oracle® Enterprise Session Border Controller to query a DNS server for a hostname returned in an ENUM lookup result:

1. In Superuser mode, type configure terminal and press Enter.

   ORACLE# configure terminal

2. Type session-router and press Enter.

   ORACLE(configure)# session-router

3. Type local-routing-config and press Enter.

   ORACLE(session-router)# enum-config
   ORACLE(enum-config)#

4. recursive-query—Set this parameter to enabled for the Oracle® Enterprise Session Border Controller to query a DNS server for a hostname returned in an ENUM result.
5. Save your work using the done command.