Note: Set the following parameters under the Line 1 or Line 2 tab, depending on to what Line the fax is registered.
Access the PAP2's web-based setup page. For instructions, click here.
Once the PAP2's web-based setup page appears, click Admin Login then click switch to advanced view.
Step 3: Click Line 1 or Line 2.
Look for Network Settings set Network Jitter Level to high.
Go to the Audio Configuration section and set Silence Supp Enable, Echo Supp Enable, and No Echo Canceller to no. Set FAX PassthruMethod to NSE, FAX Passthru Codec to G711u, and Use Pref Codec Only to yes.
Go to the Supplementary Service Subscription section and set Call Waiting Serv and Three Way Conf Serv to yes.
Note: If the above settings did not work, please power down the PAP2 and power it on after 30 seconds.