We recently purchased two 7975's and the handsets are different than our 7940's and 7960's. There seems to be a lack of higher pitch. The call volume is good and the clarity is there it just sounds like a more narrow range. I know this sounds petty but I have a few users that would balk at this immediately.
We RMA'd the handsets and I got back one that was the old style and one that was the new.
The 7975 support G722 and has improved acoustics design on the Speakerphone and handsets. We recently acquired a number of 7945s and I find that the improved acoutic design makes the sound superb, even without using G722 codec. Having a phone converstation with another 7945 user sounded like I was talking to a person right next to me.
Even calls to the PSTN sounded a tad more natural.
Just thought I would add the reference doc to the good info from Jeffrey. (+5 points here Jeffrey :)
Cisco Unified IP Phone 7975G Q & A
Q. What is wideband? What are the advantages?
A. Wideband audio expands the available spectrum for voice communications from the standard PSTN range of approximately 300-3300 Hz to approximately 150-7000 Hz.The increased spectrum/frequency response leads to greater voice clarity, intelligibility, "richness," and less listener fatigue.
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The short answer is that you don't.... That isn't entirely true while at
the same time it kind of is, but for the most part you don't configure
the softkeys. You enable or disable them via TCL. Here is the long
answer. Be sure to read the whole thing or e...
Topology: IP Phone > Switches > Microsoft NPS setup to forward 802.1x
proxy to > ISE 2.1 patch 3 Authentication: EAP-TLS using Cisco MIC SANs
Phone Models 802.1X support? 802.1x flavor Addtl Comment EAP-MD5 EAP-TLS
Cisco 3905 Y Y N Cisco 6911 Y Y N Cisco ...