1. Line Gain is too low. Please go to “Advanced>Line Parameter”. Increase the gain.

2. Maybe it's the problem of impedence. Please go to “Tools>FXO Test”to do the FXO test again, start and save.

3. Maybe it's the problem of the low handset mic gain of the telephone. Please increase it.
Mon ~ Fri: 9:00 ~ 19:00
1402, Jingting Building, Guangming District, Shenzhen City, Guangdong Province, China
zchen@equiinet.cn

