User's Manual Part 2

Nomad User’s Manual Chapter 10 – Call Performance Configuration Options

Figure 10-4 - Mobile Terminated Call Performance Testing

 The test will stop after the configured number of Attempts. Alternatively, use the Stop

button to end the test at any time as desired.

 Note: Losing internet connectivity during a Mobile Terminated Call Performance campaign

may cause the Stop button to cease working. In this case, wait for a call to come to the

phone, answer the call and dial 9999. This will manually stop the Call Server from

repeatedly calling the phone through the scheduled end of the test.

Test results can be found on the Call Performance Summary, Call Initiation, Call Retention,

Audio Verification and Device Performance tabs of the output report.

Spirent recommends following these best practices for the best results with Mobile Terminated

testing:

 Confirm that the test handset is properly configured with voicemail. This will ensure that

voicemail is properly detected during testing.

 The Access Timeout parameter for a Mobile Terminated call campaign must be set to a

larger duration than it takes the phone to go to voicemail. If Access Timeout is too short,

Nomad will fail to recognize a call sent to voicemail. Instead, such a call will be classified as

an Access Timeout before voicemail picks up. A 45-second Access Timeout is generally

sufficient for North American carriers.

 Nomad can take up to seven seconds to detect voicemail. In a Synchronous campaign it is

best practice to set Duration at least seven seconds longer than Access Timeout to ensure

that no Voicemail events are missed.