Will the Obi200 be updated to support wideband calls with GV?

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andyo:
I noticed something interesting on SteveInWA's post about the XMPP shutdown by Google, in which he mentions that Obi devices will be able to support "emerging technology, such as wideband audio on calls, depending on device and carrier support."

So, is it possible that the Obi200 be updated to support wideband audio between it and VoIP GV devices?

drgeoff:
Wideband audio requires more than a wideband codec.  To get the full acoustic benefit requires that the audio transducers in the phone, its circuitry and the circuitry in the OBi including its A to D and D to A converters can handle and benefit from the wider bandwidth.

Although a firmware update might* be able to give an OBi ATA a wideband codec it cannot change the hardware in the OBi or the phone.  So the possibilities are rather limited.

Also remember that a wideband call can only happen when both ends are wideband capable and all sections of the transmission path support wideband.  Yes, calling a wideband endpoint device over a wideband GV service passes some of those hurdles but you still have the limitations of your existing ATA and phone.

I think you can draw your own conclusions as to the actual impact on your telephony experience for the foreseeable future.

(* There is the issue of how much processing power a codec requires.)

andyo:
Thanks, I understand there are wideband-capable phones so I didn't mention phone compatibility in order to keep the post shorter. I know all the hardware in the chain has to be compatible, but I'd have thought nowadays processing power for wideband codecs would be trivial, and didn't think the D/A & A/D converters would be an issue either.

drgeoff:
Quote from: andyo on May 01, 2018, 05:48:13 am

Thanks, I understand there are wideband-capable phones so I didn't mention phone compatibility in order to keep the post shorter. I know all the hardware in the chain has to be compatible, but I'd have thought nowadays processing power for wideband codecs would be trivial, and didn't think the D/A & A/D converters would be an issue either.

If the hardware clocks for, and any analogue filters around, the A to D and D to A converters were designed and equipped for 8 kHz sampling only, no software can change that no matter how much processing power the CPU has.

Yes there are wideband IP phones - the OBi1000 and OBi2000 ranges for example - but I'm not aware of analogue POTS phones (such as plug into the RJ11 socket on an OBi ATA) that are truly wideband.

SteveInWA:
Aside from what Geoff said,

There are no analog telephones that support HD Voice (wideband).  There's no point in manufacturing them, since the POTS network can't support them.

If you want wideband calling, buy a IP phone.

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