GL offers test tools to analyze and simulate satellite channels across various interfaces. These include
Analog 2-Wire, Analog 4-Wire, T1, E1, IP, T3, E3, OC3 / STM1, and OC12 / STM4. Applications include:
- Testing GSM backhaul over satellite
- BER testing across all satellite gateway interfaces
- Satellite delay and error simulation
- Voice quality testing
- Round-trip and one way delay measurement
- Echo simulation and echo cancellation testing
GSM Backhaul, BER, and Voice Quality Testing
Testing GSM backhaul over satellite:

- Increasingly popular and cost-effective for mobile services in remote locations
- Test TRAU frame alignment and handoff in satellite backhaul applications
- Synchronization testing
Satellite Delay and Error Simulation:
- Simulate propagation delay across many interfaces (see Figure 2)
- Simulate errors
Measure Propagation delay:
- One way digital delay with microsecond accuracy one way analog delay
- plot satellite delay variation with time
Simulate echo:
- with USB T1 E1 Analyzer or HD T1 E1 Cards
- with Analog interfaces
Clock measurement:
- measure clock drift as function of time