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Dia
Premium Account
Registration Date: 03.03.2006
Posts: 1443
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Trial period for HD Voice (G.722 vocoder) |
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Following some preliminary trials during the past four weeks, we have enabled the G.722 vocoder across all servers, on a trial basis. This permits PBXes' users to experience the advantages of HD voice, if their IP-phone, DECT handset or soft-phone supports the G.722 vocoder, and it is currently activated on their SIP UA.
All ATAs are automatically excluded, as they don't support anything better than G.711, since the telephone sets connected to their FXS ports don't support the additional frequencies required.
During the trial, we wish to monitor how call setup performs, how many SIP UAs will take advantage of it, resolve any lingering issues with it, and judge whether to add it as a permanent feature.
In order to activate the G.722 vocoder in your account, the Software version should be changed to Newest, in the Personal Data section.
Enjoy the newfound clear-crystal sound.
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23.04.2010 01:10 |
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bob
Registration Date: 01.01.1970
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23.04.2010 11:08 |
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Dia
Premium Account
Registration Date: 03.03.2006
Posts: 1443
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RE: Trial period for HD Voice (G.722 vocoder) |
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The answer to your question "Does this mean that only from by fritzbox 7270 till PBXes it supports G.722 and after that it's converted to G.711u" the case is exactly as you wrote it. This can also be verified going through the entries in your System Log.
As such, use of the G.722 is pointless when dialing PSTN calls, since it is almost impossible for the PSTN side to allow use of higher frequencies. So setting the order of vocoders to G.722 first, G.729 second and G.711 third on your SIP UAs, covers all the cases.
As a side note, the Fritz!Box 7270 is an exception to the ATA rule, since the G.722 vocoder is only active if you use a DECT handset associated with the 7270's built-in DECT base to dial and answer calls, but not when using an analog phone connected to its' FXS ports.
In addition, in order to experience the full effect of the HD voice feature, the DECT handsets associated with the built-in DECT base of the 7270, have to be HD enabled as well. This means, their microphone and speaker(s) should have the ability to capture the expanded set of frequencies HD voice requires. A regular DECT handset can certainly be associated with the 7270's DECT base, but it will not be able to capture and reproduce the full spectrum of sound the G.722 vocoder makes available to us.
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23.04.2010 13:38 |
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bob
Registration Date: 01.01.1970
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23.04.2010 15:37 |
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tij
Grünschnabel
Registration Date: 28.10.2007
Posts: 137
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24.04.2010 01:53 |
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Dia
Premium Account
Registration Date: 03.03.2006
Posts: 1443
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24.04.2010 23:39 |
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bob
Registration Date: 01.01.1970
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25.04.2010 17:02 |
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Dia
Premium Account
Registration Date: 03.03.2006
Posts: 1443
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26.04.2010 01:14 |
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bob
Registration Date: 01.01.1970
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26.04.2010 09:23 |
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Dia
Premium Account
Registration Date: 03.03.2006
Posts: 1443
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27.04.2010 13:16 |
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tij
Grünschnabel
Registration Date: 28.10.2007
Posts: 137
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05.05.2010 20:19 |
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i-p
Super Moderator
Registration Date: 14.01.2006
Posts: 4775
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10.06.2010 02:01 |
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