HD Voice

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omeganz101

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#119305 27-May-2013 20:19

When or if Vodafone enables wideband audio, is it required that the receiving device needs to be on an HD voice enabled network in order for it to function ?

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#826618 27-May-2013 20:23

Yes for sure like Video calling the B party number has to support it as well as the handset

coffeebaron

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#826650 27-May-2013 20:58

If this was to be enabled at some stage on Vodafone, is there a current list of phones that are "HD Voice ready"?

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#827709 29-May-2013 13:21

Going from the history of new tech hitting mobile networks (other countries and our own), I'd say it's likely that HD voice would initially be limited within the scope of the network, meaning that A and B must be in the same network and both have handsets with HD voice capability.

From memory there were only a few handsets capable of HD voice; Lumia 920, Samsung Galaxy S3+, iPhone 5+, Sony Xperia Z, HTC One, Blackberry Z10. There are probably more devices now, though I'm not sure if there is an official list.

You can always use Viber, Skype, or another VoIP app, (over 3G/4G/WiFi) as many VoIP services have had HD voice for a while now.

Zeon

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#827718 29-May-2013 13:49

Will you be able to call from "HD" landlines from other providers e.g. g.722?

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sbiddle

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#827872 29-May-2013 16:56

Zeon: Will you be able to call from "HD" landlines from other providers e.g. g.722?

No. Completely different networks that would require SIP interconnects.

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#827887 29-May-2013 17:18

sbiddle:
Zeon: Will you be able to call from "HD" landlines from other providers e.g. g.722?

No. Completely different networks that would require SIP interconnects.

But long term with interconnects, would this be possible?

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#827944 29-May-2013 19:15

coffeebaron:
sbiddle:
Zeon: Will you be able to call from "HD" landlines from other providers e.g. g.722?

No. Completely different networks that would require SIP interconnects.

But long term with interconnects, would this be possible?

Landlines are analogue, HD codecs are digital. If you have a digital home phone and the person you’re calling does, this would be, in theory, possible.

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#827950 29-May-2013 19:23

AKT:
coffeebaron:
sbiddle:
Zeon: Will you be able to call from "HD" landlines from other providers e.g. g.722?

No. Completely different networks that would require SIP interconnects.

But long term with interconnects, would this be possible?

Landlines are analogue, HD codecs are digital. If you have a digital home phone and the person you’re calling does, this would be, in theory, possible.

A

In theory, yes - but only if appropriate hardware for transcoding existed at the edge of the network. You would need to transcode G.722 to AMR WB for this to work.

coffeebaron

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#827953 29-May-2013 19:27

AKT:
coffeebaron:
sbiddle:
Zeon: Will you be able to call from "HD" landlines from other providers e.g. g.722?

No. Completely different networks that would require SIP interconnects.

But long term with interconnects, would this be possible?

Landlines are analogue, HD codecs are digital. If you have a digital home phone and the person you’re calling does, this would be, in theory, possible.

A

Yes, G722 capable SIP phone, not PSTN analogue phone is what we mean. I'd say long term as HD Voice in the VoIP world takes off, and mobile HD Voice too; I'm sure they will make a way to connect. Same with VoIP - VoIP interconnecting providers.

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#845648 26-Jun-2013 15:50

Looks like this has been launched in Australia:
http://blog.vodafone.com.au/blog/media-release-vodafone-introduces-hd-voice-calling/

Here's hoping VFNZ decide to follow soon too?? :)

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ajobbins

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#845662 26-Jun-2013 16:32

sbiddleIn theory, yes - but only if appropriate hardware for transcoding existed at the edge of the network. You would need to transcode G.722 to AMR WB for this to work.

I thought SIP could use AMR-WB natively as long as it was supported by the carrier(s) and the endpoints?

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#846653 28-Jun-2013 11:22

ajobbins:
sbiddleIn theory, yes - but only if appropriate hardware for transcoding existed at the edge of the network. You would need to transcode G.722 to AMR WB for this to work.

I thought SIP could use AMR-WB natively as long as it was supported by the carrier(s) and the endpoints?

yeah it should be able to. i'd rather see cellphones just use g722. is there such extreme congestion in 4g/lte networks that the extra bandwidth usage would be a problem?

and i expect won't see wideband on the lower speed 3g end points.

amr-wb is actually a variant of g722 with compression / gradual degredation.

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#846692 28-Jun-2013 11:59

coffeebaron: Looks like this has been launched in Australia:
http://blog.vodafone.com.au/blog/media-release-vodafone-introduces-hd-voice-calling/

Here's hoping VFNZ decide to follow soon too?? :)

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#846696 28-Jun-2013 12:07

BTW: Telenor Norway have made this commercial for HD Voice and its noise canceling abilities. They let someone record a song from the demolition of a fire station in Oslo.

Check out the video from around 1.15 Here is a video where they show off the difference in a regular street

Regular phone at the start, and HD voice from around 24 seconds into the video. So here they are touting the noise canceling abilities more than the sound quality. For me with iPhone 5 to iPhone 5 on same network it was incredibly noticable how much better the sound was.

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#846713 28-Jun-2013 12:32

mercutio:
ajobbins:
sbiddleIn theory, yes - but only if appropriate hardware for transcoding existed at the edge of the network. You would need to transcode G.722 to AMR WB for this to work.

I thought SIP could use AMR-WB natively as long as it was supported by the carrier(s) and the endpoints?

yeah it should be able to. i'd rather see cellphones just use g722. is there such extreme congestion in 4g/lte networks that the extra bandwidth usage would be a problem?

and i expect won't see wideband on the lower speed 3g end points.

amr-wb is actually a variant of g722 with compression / gradual degredation.

You can't just make a cellphone use G.722 as voice is circuit switched, not IP. AMR-WB is the circuit switched codec used.

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