Diameter Signaling Controller (DSC)

Master your 4G signaling traffic with the BroadForward DSC. As the unified engine for routing, interworking, and security across core and edge domains, the DSC combines DRA, DEA, and IWF capabilities on a single software platform. It delivers full AVP‑level control, GSMA FS.19 firewall protection, and native 4G-5G interworking, giving operators complete command over how signaling flows, scales, and evolves during the transition to next‑generation networks.

Deployment options:

Bare metal
Virtual machine
Container
Cloud

Features:

GUI based configuration management
DRA and DEA functions supported by the same software engine
Full AVP access for mediation and interoperability
Selective Ingress Throttling for congestion control and prioritization
Diameter Firewall according to GSMA FS.19

Foundation

The BroadForward DSC in your Network

The BroadForward Diameter Signaling Controller (DSC) provides a centralized, software‑based command layer for all Diameter interactions across 4G/LTE, IMS, VoLTE, and Wi‑Fi cores. By unifying DRA, DEA, and IWF capabilities on a single engine, it replaces fragmented Diameter integrations with a centrally governed signaling layer.
The DSC manages routing and session binding, hides core topology, and delivers full AVP‑level mediation to resolve multi‑vendor interoperability issues. With native cross‑protocol translation, it gives operators complete control and visibility over how legacy and next‑generation core domains interoperate during the evolution toward 5G.

Years of BFX USC in production

Operators running BFX USC

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GSMA GLOMO winner

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Trusted by

Multi-tenancy

Streamlining 4G Core Complexity: Centralized Routing & Interworking

Every BroadForward product runs on the BFX Unified Signaling Core (USC), providing one engine and one operational model for all 2G-5G signaling functions. The same GUI, provisioning model, workflows, and operational environment apply across all products - delivering a single interface for all signaling.

Features a 100% graphical interface (CLI is also supported) for configuring routing logic, AVP manipulation, and protocol mediation, empowering operators to adapt policies instantly without custom coding or expensive vendor CRs.

Includes native SS7- Diameter and Diameter- HTTP/2 interworking functions (IWF) to connect 2G/3G and 4G core elements (e.g., EIR, PCRF, OCS) directly with 4G and next-generation 5G core network functions, enabling coexistence across multiple generations.

Trusted by professionals

See why leading professionals choose BroadForward.

We’re proud to have been leveraging the BroadForward platform for quite a while. The solution has played an important role in enabling connectivity with operators and providers preparing for the 5G SA era. Its flexibility, reliability, and future-ready architecture make it a standout platform in the industry.

This not only saves money, but critically speeds time to market

An elegant and innovative solution to a legacy problem of critical voice networks — fulfils an immediate market need

One of the few independent signaling experts successful in winning business from operators looking for a multi-technology signaling platform

BroadForward’s solutions have already strengthened our signaling capabilities, driving greater operational efficiency

This not only saves money, but critically speeds time to market

An elegant and innovative solution to a legacy problem of critical voice networks — fulfils an immediate market need

One of the few independent signaling experts successful in winning business from operators looking for a multi-technology signaling platform

BroadForward’s solutions have already strengthened our signaling capabilities, driving greater operational efficiency

Specifications

Everything you need to evaluate, in one place

Supported Standards & Core Features

Complete 3GPP Diameter Application Support Fully compliant with 3GPP and GSMA standards for all core Diameter interfaces, including Gx, Gy, Gz, Rx, Ro, Rf, Sy, Sh, S6a, S6b, S6c, S6d, S9, S13, SWm, SWx, Cx, Dx, SGd, SLg, SLh.
Comprehensive DRA & PCRF Binding Provides stateful/stateless load balancing, session-binding for VoLTE/VoWi-Fi policy control (PCRF/OCS selection), and Subscriber Lookup Function (SLF) based routing.
AVP-Level Mediation & Normalization Enables payload inspection and dynamic manipulation of any Attribute-Value Pair (AVP) to resolve multi-vendor interoperability issues on the fly through the script free GUI.
One Engine, Any Protocol All BroadForward products run on the BFX Unified Signaling Core (USC), providing one engine and one operational model for all 2G–5G signaling functions. The same GUI and workflows apply across all products, delivering a single interface for all signaling.
Script-Free GUI Signaling Orchestration Provides a 100% graphical environment for building custom routing rules, AVP transformations, and mediation workflows. No scripts, no vendor CRs, no custom software development.
Efficient & Cloud‑Agnostic Architecture Designed for low resource consumption and maximum deployment flexibility across bare metal, virtualized platforms, containers, or hybrid cloud environments.

Extended Features

Overload Protection & SLA Enforcement Features adaptive ingress/egress throttling, traffic prioritization, and congestion control to maximize protection against 4G signaling storms, maintain service continuity and allow graceful recovery.
Native Multi-Generational Protocol Interworking (IWF) Out-of-the-box interworking capabilities for protocol conversion between Diameter and SS7/MAP, INAP, RADIUS, HTTP/2, REST, SOAP, LDAP, ENUM etc.
GSMA FS.19 Diameter Firewall & DEA Protection Implements GSMA Category 0, 1, 2, and 3 Diameter firewall filtering, network topology hiding, and edge screening across IPX and inter-PLMN borders.

Get more product information

Request the latest data sheet for the BroadForward DSC and share it with your team for a complete technical overview.

Full technical specifications and feature list
Deployment architecture and 4G/5G core integration overview

FAQ

We are happy to help you with any questions.

The BroadForward DRA/DEA supports 3 levels of ingress and egress limit control.
1. System level traffic limiting.
2. Peer level traffic limiting.
3. Selective Ingress Throttling function, to limit the incoming number of messages based on various configurable conditions (such as operation, Application-Id, destination network), preserving resources for critical sessions.

Deployment

Freedom of Environment: Deploying Where it Makes Sense

With the BFX Unified Signaling Core (USC) at its foundation, operators are not tied to a specific hardware vendor, appliance cycle, or hyperscaler. The BroadForward DSC can be deployed or migrated across virtual machines, containers, or bare metal, using the same configuration, without re engineering. Because the DSC separates the underlying execution platform from its routing logic, moving environments requires no re-engineering for items such as AVP mediation configuration, security profiles, and connection configuration. All Diameter routing rules, PCRF binding logic, GSMA FS.19 firewall policies, and multi-generation interworking workflows built in the GUI can be exported as clean, platform-independent configuration files.