How Do I Reduce the Initial Echo that Occurs at the Beginning of Each Call?6-14 41-001190-02 Rev. 01, Rel. 1.2AastraLink Pro 160 Administrator GuideIn Release 1.2 and later, the AastraLink Pro supports SLA on hard keys L1through L4, and then softkeys for L5 and L6 on the 6755i, 6757i, 6757i CT, 9480i,and 9480i CT IP Phones. Models 6753i and 9143i IP Phones support a subset ofSLA on hard keys L1 through L3.For more detailed information about SLA, see Chapter 3, the section, “How Do I Reduce the Initial Echo that Occurs at the Beginning of EachCall?After runninng the “Audio Tuning Wizard”, an initial echo can still occur at thebeginning of each call. This is echo canceller convergence. It means the EIA lineprofile was not correctly/sufficiently balanced to avoid echo when the tuningwizard was used.To correct this, check that the correct PSTN/PBX line profile was selected, or trythe other one and re-balance the EIA again. Cx should be able to minimize echoduring the Tuning Wizard, so that the echo canceller doesn't have to work so hardand, hence, less convergence time. However, there will always be some initialecho regardless of how well the line is balanced.Can a Call Group Send a Voicemail to an Email Address?Yes. However, the email will be sent to each individual email address for everyuser who is a member of the group. (The AastraLink Pro does not support a singleemail address for a Call Group.)Does the AastraLink Pro Support Analog Telephone Adapters (ATAs)for Adding More FXS Ports?Yes. You can use FXS ATAs as secondary SIP phones on the AastraLink Pro. TheAastraLink Pro can use any SIP device which accepts a SIP registration from theAastraLink (for example, any device that can act as a SIP registrar or server). TheAastraLink Pro does not work directly with client devices, but servers such asAsterisk boxes with FXS channel banks have been tested and work successfully.Note, however, that the AastraLink Pro only supports an overall limit of 12concurrent sessions through the AastraLink host CPU.
