Carrier ENUM and Authoritative DNS Server

• ENUM and Number Portability interworking allows for accurate low-cost routing, saving operator termination costs.
• Standards based solution ensures vendor/product interoperability.
• Centralized data provisioning ensures data consistency.
• In-Memory databases assure low-latency lookups while scaling to huge record capacities
• Scalable signaling processing

Providing routing information for telephone numbers via an ENUM server allows operators to have a central data source for different routing engines, e.g., CSCF, SBC, TAS, or for different networks, e.g., VoIP/VoLTE/Vo5G. Supporting ENUM interworking between operators allow the efficient exchange of routing information.

Carrier DNS service allows operators to use a central database to manage IP addresses for all their network functions. Standards based DNS interworking allows smooth interconnection of network elements among operators.

Up-to-date number portability data is critical for the accurate routing of messaging and voice traffic. CSPs and messaging providers must choose between multiple suppliers for each destination. A low-cost routing engine is only as good as the data it receives as input. Titan.ium’s ENUM/DNS enables CSPs to make use of always current number portability data, leading to high success rates, low latency and reduced costs.

Titan.ium combines ENUM with DNS services (ENUM/DNS) on the Titan Platform and Titan.ium Framework to provide a solution that meets fixed and mobile network needs in addition to those of commercial and/or enterprise solutions such as private LTE and public safety networks. As depicted in the diagram below, both Titan Platform and Titan.ium Framework permit multiple network functions to be collocated with ENUM/DNS in an optimized compute footprint that may be deployed on containerized, virtualized or bare metal servers. Unique to Titan is the ability to scale from a very small single edge node implementation to a very large cluster of edge nodes that can all be administered from a single GUI/API.

Titan.ium’s ENUM/DNS is standards compliant, adhering to all the relevant IETF RFCs for carrier ENUM/DNS services. In addition, it supports the ENUM/DNS interworking solution specified in GSMA IR.67 and NG.105. Titan.ium ENUM/DSN flexibly supports multiple different deployment scenarios including support of Split-Horizon, which can provide different DNS/ENUM results for the same domain in response to queries from different sources. ENUM/DNS also supports Zone sharing and zone chaining, providing the maximum in flexibility, power and control.

Client Handling

On a per request basis, Titan.ium’s ENUM/DNS may perform Service Selection on IP address, port, or transport protocol, each of which can be defined per subnet.

ENUM Per Request Screening and Processing

ENUM/DNS performs request authorization and authority determination based on the content of the received DNS request and can act as Server and Resolver. It can support referral queries via industry standard protocols and Forward DNS services are also supported.

IMS ENUM

ENUM/DNS provides 3GPP standard ENUM services to IMS cores, enabling them to discover locally provisioned IMS subscriber information organized in one or more Titan database views. The naming and hierarchical structure of the local database views can be adjusted to meet customer/project specific needs.

Carrier ENUM

ENUM/DNS supports optional queries towards external authoritative ENUM servers. Carrier-ENUM service logic is typically utilized to optimize the routing of VoIP and IMS sessions between trusted partners. Such services include VoIP interconnect, VoLTE, Vo5G, RCS hosting, and RCS interconnect.