intermittent no ring back tone

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Bram14
Just Passing Thru
Posts: 20
Joined: 05/15/2015
SIP Device Name: SPA112
Firmware Version: 1.3.5(004p)
ISP Name: Rogers (cable)
Computer OS: osx 10.10.3
Router: asus

intermittent no ring back tone

Post by Bram14 »

Does any one experienced this problem before on spa 112 ATA. i'm having intermittent no ring back tone and busy signal (message: the person you are trying to reach is not available). i appreciate any suggestion. thank you