Category:VoIP Faults: Difference between revisions

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→‎Ghost calls /phantom calls / Strange CLI, nobody there

AA-Andrew

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=== Ghost calls /phantom calls / Strange CLI, nobody there=== If you receive phantom calls, perhaps from a CLI (eg ~~just~~'1001' 4or ~~digits~~'test' or '2000001' or '0700' etc) that is odd looking, and when you answer, there's no one then these are probably from portscans of your network and not actually from the A&A VoIP servers - they won't appear on the Call Log records. These scans result in your phone ringing with a strange caller ID, but when you answer, there's no one there because it's not a real call. *Allow Incoming SIP Messages from SIP Proxy Only [[VoIP_Phones_-_Grandstream_HT8xx#Ghost_calls?\|Grandstream Phones have this option]] Also review your [[VoIP Security\|Firewall]], and check you're only allowing VoIP traffic from the A&A servers. ==Audio/Sound problems== * '''Also See: [[SIP Audio Problems]] We have an extensive checklist to help diagnosing audio quality problems''' ===One-way audio=== Try removing everything from your broadband router and directly plug in a single phone in to the router - this will eliminate the local network See: [[SIP Audio Problems]] We have an extensive checklist to help diagnosing audio quality problems === One-way audio on call recordings ===