We would imagine it would be a useful piece of equipment in any telecom closet or interconnect installation van.
Sage Instruments SMOS and PVIT tests
All of automated tests were performed with two Sage 935AT Communication Sets. There are two basic suites for our industry:
The SMOS test, which uses a special technique to estimate the perceived quality of speech. As defined by Sage, an SMOS number above 4.0 is considered to be toll quality. An SMOS number between 3.0 to 4.0 is considered to be communication quality (intelligible but unnatural, or could be annoying and lack of speaker recognition, etc). An SMOS number below 3.0 is unacceptable for voice communication.
The SMOS test also measures latency. Sage's proprietary SMOS algorithm measures round-trip delay (latency) over a range of 0.0 to 5000.0 msec with an accuracy of +/- 0.2 milliseconds. The measured delay includes delay from a number of sources including voice processing, packetizing the voice into frames, and the jitter buffer process.
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