dsTest supports both server emulation and client simulation capabilities for the Mobile Application Part (MAP) Gc Interface. Test GPRS Gateway Support Node (GGSN) Gc interfaces in UMTS networks with our Home Location Register (HLR) Emulator. Use the Gc Interface application on our GGSN node to test the capacity and performance of an HLR. Validate network node performance and capacity in a realistic network environment, replicating the deployment configuration. For more information regarding how to use dsTest for MAP functional and compliance testing, see our page on Conformance Testing.
The Gc Interface application implements the following 3GPP Mobile Application services:
- Retrieval of routing information for GPRS
- Reporting failure to establish a network-requested PDP context
- Reporting that an MS has become reachable for GPRS
GGSN Testing (Server Emulation)
The HLR Emulator initiates the appropriate procedure when indicated, eliminating the need to dedicate a production server to lab activities. The HLR Emulator provides Mobile Subscriber data repository and routing information services for the Gc interface—all of the functionality required by a GGSN plus all of the benefits of an emulator.
You can manually trigger procedures, such as reporting that an MS has become reachable for GPRS, by executing a test event chain with a run-time command or during an automated test.
You can also use the control interface to change the emulator’s behavior. Simulate a non-responsive server by pausing the emulator or simulate intermittent issues by pausing and resuming. Disable individual subscribers during the test run, generating unknown subscriber errors.
Add functionality to your HLR Emulator by adding interfaces. Using concurrent interfaces also enables interaction between the interfaces.
Multiple HLR Emulators can be instantiated on a single server. In this mode each emulator can support multiple interfaces, up to an aggregate of 1000 client connections across all emulators. The emulators are fully independent and their subscriber databases may also be independent, overlap, or be duplicated.
HLR Testing (Client Simulation)
The Gc Interface application can be used to simulate a GGSN’s Gc interface to determine the impact of new HLR features and standards before they are deployed in a network. The Gc Interface application allows you to validate HLR performance and capacity in a realistic network environment, replicating the deployment configuration.
Execute timed chains of test events with a run-time command or during an automated test to trigger GGSN-initiated procedures.
- Request routing information for specified subscribers
- Report PDP context activation failures for specified subscribers
Multiple GGSN nodes can be instantiated on a single server, each with scalable subscriber loads and transaction rates. In this mode, up to 1000 independent GGSN nodes may be simultaneously simulated. The nodes are fully independent and their subscriber configurations may also be independent, overlap, or be duplicated.
dsTest provides rich sets of measurements that include but are not limited to:
- 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
You can read more about the reporting features offered with dsTest and dsClient here.