Model 3540 PESQ - PSTN / VoIP Voice Quality Test
The Rochelle Model 3540 PESQ Option performs end-to-end voice quality measurements on PSTN & VOIP networks and telephones by either of two methods: A two-wire 600-Ohm FXO port that simulates ideal telephony equipment ; A Handset Emulation option that interfaces to the handset port of a PSTN or VOIP phone.
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Rochelle Communications, Inc.
P.O. Box 141189
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