Cisco Wireless IP Phone 8821 and 8821-EX Administration Guide for Cisco Unified Communications Manager - Maintenance

Publisher

Cisco Systems

URL

https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cuipph/8821/english/adminguide/w88x_b_wireless-8821-8821ex-admin-guide/w88x_b_wireless-8821-8821ex-admin-guide_chapter_01000.html

Published

2016-06-28

Updated

unknown

Accessed

2026-09-22

HTTP status

200

License

Cisco copyright; all rights reserved; no-redistribution; short excerpts and locators only

Source notes citing this source

• Cisco phone documentation states that MOS LQK maximum scores depend on codec: 4.5 for G.711 and G.722 and 3.8 for G.729A/AB. in context
• Cisco phone guidance says Conceal Ratio changes should indicate greater than 3 percent frame loss. in context
• Cisco's phone guidance treats MOS LQK changes of about 0.2 or more that persist in calls longer than 30 seconds as significant, and advises using the metrics as a baseline for comparison. in context

Cite this source record

APA

WarmTransfer. (2016, June 28). Cisco Wireless IP Phone 8821 and 8821-EX Administration Guide for Cisco Unified Communications Manager - Maintenance. WarmTransfer. https://warmtransfer.net/knowledge/sources/cisco-8821-adminguide-maintenance

BibTeX

@misc{warmtransfer-cisco-8821-adminguide-maintenance,
  title  = {Cisco Wireless IP Phone 8821 and 8821-EX Administration Guide for Cisco Unified Communications Manager - Maintenance},
  author = {{WarmTransfer}},
  year   = {2016},
  url    = {https://warmtransfer.net/knowledge/sources/cisco-8821-adminguide-maintenance},
  note   = {Cisco Systems, accessed 2026-09-22}
}