Diameter Insights

What is Diameter?

Diameter is an authentication, authorization, and accounting (AAA) protocol for computer networks. It evolved from RADIUS and provides a framework for AAA services in various applications, such as network access control, mobile IP, and Voice over IP (VoIP). Diameter is more reliable and scalable than RADIUS and supports secure transport protocols like TCP and SCTP.

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What other technologies are related to Diameter?

Diameter Competitor Technologies

SS7

SS7 is a legacy signaling protocol used in telecommunications. Diameter is a more modern signaling protocol intended to replace some of SS7's functionality, making them competitors in some scenarios.

mentioned alongside Diameter in 43% (1.2k) of relevant job posts

MAP

MAP (Mobile Application Part) is an SS7 protocol used for various functions in mobile networks, such as location management and SMS. Diameter (specifically S6a) provides similar functionalities in LTE networks, making them competitors.

mentioned alongside Diameter in 26% (766) of relevant job posts

ISUP

ISUP (ISDN User Part) is an SS7 protocol used for call control in telephone networks. Diameter, with protocols like SIP, offers a more modern alternative for call control, making them competitors.

mentioned alongside Diameter in 56% (354) of relevant job posts

INAP

INAP (Intelligent Network Application Part) is an SS7 protocol used for implementing intelligent network services. Diameter can be used to provide similar services in modern networks, making them competitors.

mentioned alongside Diameter in 78% (247) of relevant job posts

HLR

HLR (Home Location Register) is a central database in 2G/3G networks that stores subscriber information. The HSS in LTE serves a similar function, and Diameter (S6a interface) is used to access the HSS. Thus, HLR's function is fulfilled using Diameter in newer networks.

mentioned alongside Diameter in 31% (169) of relevant job posts

Diameter Complementary Technologies

SIGTRAN

SIGTRAN is a suite of protocols that transport SS7 signaling over IP networks. While Diameter operates at a different layer, using SIGTRAN can facilitate migration from SS7 to Diameter-based networks, or enable interworking between SS7 and Diameter, making them complementary.

mentioned alongside Diameter in 70% (588) of relevant job posts

GTP

GTP (GPRS Tunneling Protocol) is used for setting up tunnels in a mobile network and is used in conjunction with Diameter. Diameter (Gy, Gz) is used for charging control related to the tunnels created by GTP, making them complementary.

mentioned alongside Diameter in 58% (696) of relevant job posts

PCRF

The PCRF (Policy and Charging Rules Function) is a key component in 4G/5G networks that uses Diameter (Gx interface) to communicate with the PGW (Packet Gateway) for policy and charging control. Thus, PCRF and Diameter are tightly integrated.

mentioned alongside Diameter in 40% (432) of relevant job posts