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This is the support site for Andrews & Arnold Ltd, a UK Internet provider. Information on these pages is generally for our customers but may be useful to others, enjoy!

Category:VoIP Faults: Difference between revisions

Category:VoIP Faults (view source)

Revision as of 18:55, 19 September 2025

29 bytes added ,  Yesterday at 18:55
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→‎Ghost calls /phantom calls / Strange CLI, nobody there
 
=== 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==
AA-Andrew
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Retrieved from "http://support.aa.net.uk/Special:MobileDiff/17861"