A continues long and loud beep sound while talking

Started by zmusic, December 11, 2017, 02:08:36 AM

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zmusic

My Obi200 use obi line to connect to a pstn line and setup a call forwarding  to sp1(google voice). I didn't change any setting of sp1 except the forwarding number. The forwarding function went smoothly but every time I answer the transferred call ,It will sound a very loud and continues beep at about 30s. I have to hang up the call and redial.

Is there anyone have same problem? Please tell my how to solve it. Thanks.