If you’re experiencing an echo with the SPA3102, the issue can be optimized by modifying the echo cancellation settings. You can find detailed information on setting parameters in the documentation, which is available here: http://www.cisco.com/en/US/docs/voice_ip_comm/csbpvga/ata/administration/guide/ATA_AG_v3_NC-WEB.pdf. In addition, you can find help on echo cancellation in the Small Business Support Community at http://www.cisco.com/go/smallbizsupport. For example, this discussion may be helpful: https://supportforums.cisco.com/message/3223798#3223798.
