Huawei
H35-211 · Question #80
(multiple) What are the possible positioning methods when the "echo" fault occurs in the VoIP PSTN telephony service?
The correct answer is A. Check if the acoustic echo is caused by the terminal phone. B. Check if the PSTN port transmit gain is set too large. C. Check if the DSP chip input gain (PCM->IP) is set too large. D. Check if the EC switch (echo suppression switch) of the peer device is turned on during the call. See the full explanation below for the reasoning.
Question
(multiple) What are the possible positioning methods when the "echo" fault occurs in the VoIP PSTN telephony service?
Options
- ACheck if the acoustic echo is caused by the terminal phone.
- BCheck if the PSTN port transmit gain is set too large.
- CCheck if the DSP chip input gain (PCM->IP) is set too large.
- DCheck if the EC switch (echo suppression switch) of the peer device is turned on during the call.
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(27 responses)- A100% (27)
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