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https://en.wikipedia.org/wiki/Wideband_audio
A number of audio codecs have emerged to support these services, supplementing G.722. Manufacturers of audio conferencing equipment have introduced wideband-capable models that include support for G.722 over VoIP. Conference calls are a direct beneficiary of the enhancements offered by wideband audio.
https://www.gl.com/voice-codecs.html
Codec supports Voice Activity Detection (VAD) to allow saving of bandwidth. GSM HR GSM HR 6.20 operates with sampling frequency of 8000 samples/sec. This codec outputs the frames of size 14 Bytes, which puts the bit rate of encoder at 5.6kbps with an encoding frame length of 20 ms.
https://www.cisco.com/c/en/us/support/docs/voice-unified-communications/unified-communications-manager-callmanager/41386-codec-faq.html
Mar 30, 2005 · Q. What codecs does the Cisco CallManager Music On Hold (MOH) server support? A. These audio codecs are supported by the Cisco CallManager MOH server: G.711 u-law. G.711 a-law. G.729 Annex A (G.729A). Wideband - uncompressed (proprietary 16-bit resolution and 16 kHz sampled audio). Q. What codecs does the Cisco Conference Connection support?
https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cuipph/8800-series/english/adminguide/P881_BK_C136782F_00_cisco-ip-phone-8800_series/P881_BK_C136782F_00_cisco-ip-phone-8811-8841_chapter_01010.html
Sep 05, 2019 · Set Up Wideband Codec By default, the G.722 codec is enabled for the Cisco IP Phone. If Cisco Unified Communications Manager is configured to use G.722 and if the far endpoint supports G.722, the call connects using the G.722 codec in place of G.711.
http://www.techplayon.com/voice-codec-options-for-volte-mobile-services/
Jul 31, 2017 · Voice Codec Options for VoLTE Services. July 31, 2017 December 25, 2017 admin LTE, VoLTE. ... Answer is Codec/s. ... Wide band etc. Picture below shows the theoretical bandwidths for Narrow band, Wide band, super wide band and Full Band.
https://community.cisco.com/t5/collaboration-voice-and-video/summary-of-cucm-supported-codecs/ta-p/3162905
When users use a headset that supports wideband, they can enable Wideband Headset feature from the phone settings for better quality. On the phone navigate to Settings > User Preferences > Audio Preferences > Wideband Headset. Enabling the Advertise G.722 Codec parameter causes interoperability problems with UCCX CAD, call park and ad hoc conferences.
https://community.cisco.com/t5/ip-telephony-and-phones/cisco-support-for-g722-2-wideband-codec/td-p/1380012
Dec 12, 2009 · Re: Cisco support for G722.2 wideband codec I have seen this doc, however this details support for the G.722 codec with 64KB support. G.722.2 is a variant which allows variable bandwidth to support congestion on wan or internet connections.
https://www.3gpp.org/news-events/3gpp-news/1639-evs_news
For narrowband and wideband audio bandwidths, the EVS codec delivers higher quality, higher frame/packet error resilience, and higher compression efficiency than previous speech codecs, leading to improved user experience and system efficiency.
https://refurbphoneexchange.com/blogs/phone-and-tech-blog/15618368-what-is-the-difference-between-wideband-and-narrowband-telephone-audio
Wideband Audio: Wideband audio is commonly known as HD voice. Wideband comes in two main variations, known as G.722 and G.722.2. Despite having very similar names, these codecs behave quite differently. G.722 works by doubling the sampling of audio frequencies from 50 Hz to 7 kHz.
https://www.voipsupply.com/blog/voip-insider/ask-mr-andrews-what-is-hd-voice/
Cisco supports G.722 wideband codec on their CP-7942G, CP-7962G, CP-7945G, CP-7965G and CP-7975G Unified IP Phone models. Additionally, the CP-7906G, CP-7911G, CP-7931G, CP-7941G-GE, CP-7961G, CP-7961G-GE, CP-7970G and CP-7971G-GE models can be upgraded to support G.722 with an option wideband handset or headset.
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