Diameter Signaling Controller

Diametriq’s Diameter Solution Suite™

The Smarter Diameter Signaling Controller

While data traffic continues to grow at an unprecedented rate, the emergence of Long Term Evolution (LTE) networks is causing a fundamental shift in the core network from SS7-based signaling to Diameter signaling.  This has given rise to a new class of products referred to as Diameter Signaling Controllers (DSCs) that address the growth and expected congestion in signaling traffic by efficiently routing signaling information.

There are many network elements that need to interconnect using Diameter in Evolved Packet Core (EPC) and IP Multimedia Subsystem (IMS) networks as well as interconnection to legacy networks. (See diagram below).

With the growth in the number of LTE devices, the increased number of interfaces in the EPC and the migration of signaling from SS7 to Diameter, the volume of Diameter messages in the EPC has exploded. This explosion illustrates the need for a carrier-grade infrastructure to support scalability and reliability for Diameter in the EPC. For SS7 the Signaling Transfer Point (STP) was used to facilitate a carrier-grade infrastructure. For Diameter the Diameter Signaling Controller (DSC) is used for providing the same carrier-grade infrastructure in the EPC. As important as the STP was in SS7 networks, the DSC is critical to support this Diameter signaling explosion.

Diametriq, an innovator in Diameter signaling control technologies, offers an exceptional suite of DSC solutions, the Diameter Solution Suite™ (DSS).  Diametriq’s application enabled platform includes a Diameter Routing Agent (DRA), a Diameter Load Balancer (DLB), Diameter Edge Agent (DEA), and a Diameter Interworking Function (IWF).  These functions can be configured to meet your specific network requirements as well as serve as a host for critical applications that utilize the information contained in Diameter messages.

Diametriq’s Diameter Solution Suite™

Diameter Solution Suite


  • Flexibly rules-based routing using configurable AVPs with AVP modification
  • High availability (HA) solution on a single site giving at least 99.999% reliability
  • Geographic redundant (GR) solution across multiple sites for disaster recovery (DR)
  • Scalable to 1M messages/sec per cluster
  • Linux-based using Intel or ATCA-based server

Benefits of the Diameter Solution Suite

  • Centralized Traffic Management and Load Balancing
  • Congestion Control
  • Failover Assurance
  • Vendor Interoperability
  • Session Binding
  • Powerful Application Selector Function for offering new LTE services


 Standards Compliance


  • Diameter Relay/Proxy Agent (DRL) : RFC 3588
  • Diameter Redirect Agent (DRD) : RFC 3588
  • Diameter Translation Agent (TLA) : RFC 3588


  • Diameter Routing Agent (DRA) : TS 29.213
  • Subscription Locator Function (SLF) : TS 29.228
  • Interworking Function (IWF) for Diameter-MAP : TS 29.305


  • Diameter Edge Agent (DEA) – IR.88
  • S6a/S6d Proxy – IR.88
  • IWF S6a/S6d to Gr – IR-88