Is there a call quality test number with HD voice quality?

General
1

Does anybody know of a test number for call quality tests in HD voice quality ?
Here are a few test numbers that I know of - they all seem to be limited to G.711:

  • echo test numbers:
    1-250-412-5922
    1-416-342-9562
    1-804-222-1111
    1-909-390-0003
    1-925-259-0082
    011-49-89-7210-1099-701
    011-61-2-8503-8000
    011-64-9-887-6986

  • numbers connecting to music recordings:
    1-226-336-1437
    1-248-434-5508
    1-719-266-2837
    1-844-387-6962
    011-49-89-7210-1099-703

  • other test numbers:
    1-408-647-4636
    1-858-651-5050
    1-914-737-9938
    011-49-89-7210-1099-702
    011-61-2-8503-8000
    011-64-9-887-6986

2

How do you know it’s not HD ?

What about 4443 Voip.ms’s echo test ? I also think it’s not HD but we can’t be 100% sure since the server could be transcoding from from G.711.

3

First I check a given number using G.711, then I check it again using G.722: if there is the same muffled sound in both cases, then it’s obviously not HD.

On the other hand, after dialing 4443 with the phone set to G.722 I definitely get HD quality.

I should have said that I am looking for a HD capable test number that is external to the phone system I am using. :slight_smile: