Configure ENUM Servers

You can create E.164 Number to URI Mapping (ENUM) server configurations on the Oracle Enterprise Communications Broker (OECB) to resolve SIP URIs presented to the OECB in a call. An ENUM server configuration points to one or more ENUM servers from which the OECB can request resolutions. Configuring with multiple servers provides redundancy when a particular server cannot respond or provide a resolution.

• Configure a top-level domain
• Configure one or more ENUM servers to add to the ENUM settings configuration

Similar to an agent configuration, an ENUM server configuration includes number translation settings for the strings returned by the ENUM infrastructure. The ENUM configuration also includes configuration values to support the interaction with the servers.

1. Access the ENUM Servers configuration object.
   Configuration tab, Service Provisioning section, Agents, ENUM Servers.
2. On the ENUM Servers page, click Add, and do the following:

   Name	Enter a unique name for this ENUM configuration. You may need to use this name in other areas of the OECB configuration to refer to this ENUM configuration. For example, in route configuration.
   Top Level Domain	Enter the domain extension to use when querying the ENUM servers for this configuration. For example, e164.arpa. The query name is a concatenation of the number and the domain.
   Servers	Enter one or more ENUM servers (an ENUM server and corresponding redundant servers) to query. Separate each server address with a space and enclose list within parentheses. Note: The OECB media interface does not support management traffic for ENUM. When configuring connectivity to a media interface, do not configure these resources within a media interface subnet range.
   Number Translation Mode	Select the translation mode required by this agent. The modes define how to format the ENUM request to accommodate the specific ENUM server. Valid values: E164 - Default. The server can accept numbers in E164 format. E164-no-plus. The server uses numbers in E164 format, with the exception of the plus sign. no-country-code. The server cannot use a country code. pattern-only. The server cannot use any string that varies from the configured pattern. n-digit-dialing. The server requires the specified number of digits.
   Number of Digits for n Digit Dialing	If you selected n-digit-dialing as the Number Translation Mode for this agent, specify the number of digits the OECB must send to this server.
   Prepend Prefix	Specify a prefix the OECB must send to this server. For example, the digit 9, which may be required to allow outbound traffic.
   Advanced Settings	Expand to display the following settings.
   Query Method	Set the strategy the OECB uses to contact ENUM servers. Valid values are: hunt—Directs all ENUM queries toward the first configured ENUM server. When the first server is unreachable, the OECB directs all ENUM queries to the next configured ENUM server, and so on. round-robin—Cycles all ENUM queries sequentially among all configured in-service ENUM servers. The OECB directs query 1 to server 1, query 2 to server 2, query 3 to server 3, and so on.
   Time Out	Set the number of seconds to elapse before a query sent to a server (and its retransmissions) times out. Range: 0-4294967295 seconds.
   Lookup Length	Set the length of the ENUM query, starting from the most significant digit. Default: 0. Range: 1-255.
   Max Response Size	Enter the maximum size in bytes for UDP datagrams in DNS NAPTR responses. Range: 512 (default)-65535. Oracle recommends configuring values that do not exceed 4096 bytes.
   Health Query Number	Set a standard ENUM NAPTR query that will consistently return a positive response from the ENUM server. Blank = disabled.
   Health Query Interval	Set the number of seconds to perpetually probe ENUM servers for health. Range: 0-65535 seconds.
   ENUM Options	Add one or more ENUM options.

3. Click OK.
4. Save and activate the configuration.