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dsTest, Developing Solutions, S9 Interface, PCRF Testing, Visited PCRF, VPCRF, PCC Testing

dsTest supports server emulation and client simulation for the 3GPP Diameter S9 interface. Test policy interworking between domains to a Visiting Policy Control and Charging Rules Function (V-PCRF) in 3GPP LTE networks with our PCRF Emulator. Test VoLTE  and PCC  interactions by using the S9 Interface application with other dsTest  Interface Applications such as Gx, Rx, Ro, Rf, and Sd. Use the PCRF Emulator and S9 Interface application in tandem to test Diameter Routing Agents (DRA), Proxies, Relay Agents, and Redirect Agents. Simulate a V-PCRF with the S9 Interface application to test the capacity and performance of an H-PCRF.  dsTest provides more tools for Diameter compliance testing.


The S9 application implements the following procedures:

  • Initiate an Initial Request message from an idle transaction.
  • Initiate a rule install for an active transaction.
  • Initiate a rule remove for an active transaction
  • Initiate an Application Detection and Control (ADC) rule install for an active transaction.
  • Initiate an ADC rule remove for an active transaction.
  • V-PCRF Initiated Event Trigger
  • V-PCRF Indication of IP-CAN Service Establishment or Resource Addition
  • V-PCRF Indication of IP-CAN Service or Resource Modification
  • V-PCRF Indication of IP-CAN Service Termination or Resource Deletion

A complete set of events that can be generated with the S9 interface application can be found here, and our Diameter Dictionary can be used to construct, test, and validate the results of your S9 testing.

Server EmulationdsTest, Developing Solutions, S9 Interface, PCRF Testing, Visited PCRF, VPCRF

The S9 Interface application can be used as part of the PCRF server Emulator to test the reaction of a client V-PCRF to PCC rule installation, modification, and removal or ADC rule installation and removal. Test capacity and performance of your V-PCRF nodes while you verify that the nodes correctly interact with the PCRF Emulator, sending indications of establishment/modification/termination of IP-CAN services and resources.

Multiple V-PCRF nodes can be instantiated on a single server, each with scalable subscriber loads and transaction rates. In this mode, up to 1000 independent nodes may be simultaneously simulated. The nodes are fully independent and their subscriber configurations may also be independent, overlap, or be duplicated.

Read more about our PCRF Emulator.

Client SimulationdsTest, Developing Solutions, S9 Interface, PCRF Testing, SGW Testing, PGW Testing, CSCF Test, Gx Interface, Rx Interface, Gxc Interface

The S9 Interface application can be used as a S9 client simulator to test the impact of new PCRF features and standards before they are deployed in a network.  The S9 interface, in conjunction with the Rx, Gx and Gxx interfaces, allow users to fully validate PCRF performance and capacity in a realistic network environment, replicating a deployment configuration.

Read more about our testing solutions.

Advanced Testing Features

SmartEvents — Alter application behavior or coordinate multiple interface applications with SmartEvents. Our programmable, subscriber-level state machine gives you the ability to define handlers for specified application events that can then cause an event in another application to be executed. You can also configure handlers to modify subscriber information during run-time, introduce timers, or randomize subscriber behavior based on configurable probabilities to name a few of the many options in one of dsTest’s most powerful features.

SmartMessageElement — Insert, delete, or replace elements in Diameter, RADIUS, MAP, LDAP, GTP, REST, or SOAP messages with our SmartMessageElement solution. Define proprietary signaling or corrupt elements to facilitate negative testing. You can specify when your elements are used with SmartEvents.

Traffic Profile — Draw the shape of your test actions across time with Traffic Profile. You can define the rate for any action as a static rate or reference a Traffic Profile configuration, which also means that multiple Traffic Profiles can be running currently. Use Traffic Profile in conjunction with the randomizing features in SmartEvents to design a test that more truly simulates real-world network activity.

Diameter Dictionary — Define a set of message templates against which all messages will be validated with our Diameter Dictionary. Whether you’re load testing or testing functionality all messages are validated.

Operational Measurements

dsTest provides rich sets of measurements for the S9 interface:

  • Transaction and transport layer attempts, successes, and failures
  • Transaction duration, transactions-per-second, and round-trip delay
  • Message and byte counters
  • Errors encountered and error indications received in messages

See our Online Help for S9 measurements, Diameter measurements, and socket measurements.

You can read more about the reporting features offered with dsTest and dsClient here.

Supporting Standards3GPP S9 Diameter Interface