The client sets up a number that, once dialed, is placed in ‘echo back’ mode (all audio received is immediately echoed back down the line).
- The client sets up a number that, once dialed, is placed in ‘echo back’ mode (all audio received is immediately echoed back down the line).
- The Spearline in-country server dials your Toll or Toll-Free contact number using standard ISDN phone lines provided by local carriers in-country (this replicates your customer’s experience).
- Spearline server sends 10 pulses of audio from our server in-country, all of which are of a slightly different frequency.
- Spearline will use the different frequencies to pair the tones we send with those echoed back to us. We then measure the time it takes for each tone to be echoed back to the origination point, thus providing the round-trip latency.
Video – Latency Test Explained