After many months of troubleshooting I found the problem to be my Dect 6.0 cordless phone. It is an old (10 year old ) system and has three separate handsets. Since all of the handsets had the problem I didn't think it could be the phone. Eliminated ...
@Datalink I don't have a router on hand but will get my hands on one and try that . In the meantime I will be unhappy. My Voip provider(Anveo) was also not much help either.
@-G- I reran the sip-alg test with firewall off and it came back as negative. Can I then assume that it is not on router ? Is it a perfect test?If I can assume this I will proceed to find other changes to improve my service.
