Software Defined Network and Virtualization In this whitepaper, we look at network virtualization for Diameter signaling services. We begin by examining current pain points for the service provider’s growth in signaling traffic. We discuss use cases on how both SDN and NFV can address these network pain points.  Diametriq has created a signaling network architecture […]

Diametriq’s Diameter Solution Suite™ includes a Diameter Routing Agent (DRA), Diameter Edge Agent (DEA), a Diameter Load Balancer (DLB) and a Diameter Interworking System (IWF). The Diameter Routing Engine™ (DRE) is a Diameter Routing Agent (DRA) combined with a Diameter Load Balancer (DLB) that offers traffic management and load balancing functions that can be configured […]

Diametriq’s Diameter Interworking System™ – Legacy Interworking The Diameter Interworking System™ serving as a Diameter Interworking Function (IWF) provides an interworking capability for Diameter and SS7 that may be dynamically customized using script or plug-ins. The  Diameter Interworking System supports MAP to/from Diameter (e.g., S6a, S6d, S13, S13’ to GSM MAP and ANSI41 MAP) and […]

These are the slides presented by Arnab Dey, Technical Lead for Diametriq, to the GSMA North America meeting  held on May 14, 2013 in New Orleans, Louisiana about the role of Diameter in LTE roaming and interoperability.

Realization of Interworking in LTE Roaming Using a Diameter Interworking Function While operators around the world are onboarding or planning to onboard the LTE-based Evolved Packet System (EPS), some troubling questions linger on. The prospects of LTE are enticing. However, would the LTE and Legacy networks interwork and co-exist? Would inbound/outbound roamers face any service […]

The Diameter Edge Appliance™ is a cost-effective yet highly reliable carrier-grade Diameter Edge Agent with unique features that differentiate it from the competition. The product is ideal for Wireless Network Operators who do not need an expensive Diameter Signaling Controller, yet need to connect to an IPX or other operators for LTE roaming.

An independent consultant, Tonse Telecom (, has developed a whitepaper “The LTE Data Storm in the Core of Your Network!” that explores the challenge that carrier network architects and mobile operators have in attempting to accurately predict and forecast LTE signaling traffic. Tonse used Diametriq’s Diameter Traffic Calculator™ to project signaling traffic scenarios for various use […]

“The Past, Present and Future of Diameter Signaling Control.” The 10th in a series of whitepapers from Diametriq about signaling in LTE networks, this paper takes a look at the current state of the LTE global build out and the factors that will continue to increase the amount of signaling traffic in coming years. The author […]

This slides presentation “RCS over LTE using Diameter-based Policy Control” by Arnab Dey, Technical Lead for Diametriq, was presented to the GSMA North America on January 22, 2013 in Tampa, Florida about the impact of RCS on Diameter signaling.

The arrival of 4G/LTE has opened up new opportunities for MVNO’s to offer distinguishing data plans and services. However, before that is possible, MVNO’s and MVNE’s have to get familiar with a completely new network architecture, a host of new network elements and a fundamentally new communication protocol called Diameter. Diameter impacts all interfaces like […]

Wireless operators around the world are upgrading their networks to LTE. This means not just the addition of new network elements like the P-Gateway and the S-Gateway, but also a fundamental change to the underlying signaling from SS7 to Diameter. Mobile virtual network operators (MVNO) – who typically have their own billing system and policy […]

The Internet is teeming with discussions and assertions that the amount of Diameter signaling traffic generated by the 4G LTE wireless core network is significantly higher than analogous SS7 signaling traffic. But is this additional LTE signaling traffic attributable to additional network elements involving the Diameter protocol or the impacts of changing user behavior afforded […]

Many of us in the industry have been talking for some time about the “signaling storm” and how Diameter signaling traffic will be clogging the control plane. Has anyone taken the time and effort to study this problem in depth? We at Diametriq have developed a model and did the analysis –the results may surprise […]

A Storm is Brewing – an LTE Signaling Storm We have all heard about the “LTE signaling storm” and how Diameter signaling traffic can potentially choke the network. The always-on, data-centric nature of devices in the 4G network results in an explosion in the volume of data in the user plane as well as an […]

A Diameter Signaling Controller or DSC is deployed in the 4G Evolved Packet Core (EPC) to perform signaling traffic management, roaming control, vendor interoperability and legacy interworking. Another major headache for operators will be enabling their 2G/3G services for LTE. There are two approaches to this, either integrate legacy SS7-based services using Diameter-SS7 interworking or […]

The network architecture of the mobile core has evolved to be more complex with many more elements and interfaces added in each release and the signaling has evolved from SS7 to Diameter signaling. This paper analyzes the evolution of the 3GPP mobile core and its interfaces and tracks the evolution of SS7 to Diameter signaling.

Of late there has been quite a bit of talk of the “new world order” and the emergence of the Diameter Signaling Controller (DSC). Is that really the case? For the veterans of the telecommunications industry that saw the progression of control signaling over the past twenty years, this is more like “history repeating itself”.  […]

The evolution of the 2G/3G to 4G LTE mobile data network focuses on high data-rate, low-latency and packet-optimized architecture integrated with multi radio access technologies. At the heart is the all-IP Evolved Packet Core (EPC) and voice-over-LTE (VoLTE) reuses the IP Multimedia Subsystem (IMS). The control plane of the EPC utilizes Diameter as its base […]

Diameter Routing Engine™: Diametiq’s Diameter Routing Agent 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 […]

Diametriq offers a very high performance, scalable, reliable carrier-grade implementation of the Diameter protocol stack that can be used to build 3G and 4G core network elements. Accelero™ Diameter has been used by tier one mobile equipment vendors and is deployed in tier one operator networks.

The Diameter Solution Suite™ (DSS) can be deployed in the EPC to act as a DRA. All elements connect to the DSS and all Diameter traffic passes through the DSS. The DSS examines the Diameter messages and performs load balancing and binding across the multiple instances of the HSS, PCRF and OCS/OFCS.

The Diameter Solution Suite (DSS) can be deployed in the EPC to act as a DRA and DEA at the same time. All elements connect to the DRE and all Diameter traffic passes through the DSS. The DSS examines the Diameter messages and performs load balancing and binding across the multiple instances of the HSS […]

The Evolved Packet Core (EPC) uses Diameter for access to the HSS, EIR and OCS. When the EPC is deployed in a PLMN there may be a need to use existing legacy elements like the HLR, EIR and Prepaid SCP with SS7. Conversely, when the HSS, EIR and OCS are deployed or upgraded to use […]

The Evolved Packet Core (EPC) uses Diameter for access to the HSS, EIR and OCS. If the EPC has not been deployed in a PLMN and a subscriber roams into a network where an EPC has been deployed, then queries from the V-PLMN will use Diameter and the H-PLMN has existing legacy elements like the […]

The Diameter Solution Suite™ (DSS)  can be deployed in the EPC to act as a SLF or DRA or both. The non-3GPP access elements connect to the DSSand all Diameter traffic passes through the DSS. The DSS examines the Diameter messages and performs load balancing and binding across the multiple instances of the HSS and PCRF. This […]