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Technical Services Group ~ 1-800-283-5936 (USA) ~ 1-801-974-3760
Telco Echo Return Loss Enhancement (TERLE)
The Telco Echo Return Loss Enhancement meter shows the loss through the
telephone echo cancellation process. It is the ratio of the two levels. The range of the
meter is -30 to +20dB. It is a peak meter and updates only when a signal is
present.
Total Telco Echo Reduction
The Total Telco Echo Reduction meter is the sum of the TERL and TERLE meters.
It indicates the total echo return loss in the system. The range of the meter is -50 to
0dB. It is a peak meter and only updates when signal is present.
Transmit Input
This meter shows the audio input level from the Matrix to the XAP 400 for
transmission to the telephone line. The range of the meter is -30 to +20dB.
Transmit Output
This meter shows the transmit audio output level from the XAP 400 to the Telco
DAA. The range of the meter is -30 to +20dB.
Receive Input
This meter shows the audio level input to the XAP 400 as it is received from the
Telco DAA. The range of the meter is -30 to +20dB.
Receive Output
This meter shows the receive audio level output to the Matrix. The range of the
meter is -30 to +20dB.