VoIP Phones - Cisco SPA
Ensure software is updated, as this does help with the quality of the audio, we upgraded to 1.3.2-XU (014) Jul 2 2013
View of the 'quick settings'
Line Settings
SIP Settings
change to 20ms
Regional Settings
Change the impedance settings
Notes
- Has been known to work with SKy boxes to phone home using their modems.