>Another common problem that causes echo in networks is not setting your loss plan correctly.��� You need to be sure that you aren't coming in too hot at any of your analog interfaces.�� In general you should see a signal between -20dbm and -12dbm when someone is talking on the line.�� If it is significantly hotter then you run the chance of having a larger reflected signal resulting in echo.�� I typically try padding down analog levels by 3dB at a time to see if echo is reduced.��
How do you measure the amplitude of a pstn line? As an audio engineer in a previous life, I would love to be able to send standard level tones down a pstn line and measure the amplitude at my end, then adjust the input gain accurately. Is there a way to do this? Chris Mason US Number: (646)722-0001 US Fax (815)301-9759 Skype: netconcepts � � _______________________________________________ Asterisk-Users mailing list [email protected] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
