Asterisk - Intermittent beep with linksys SPA 3102, PAP2, DTMF sounds heard during conversation Asterisk - Intermittent beep with linksys SPA 3102, PAP2, DTMF sounds heard during conversation We had users reporting hearing DTMF sounds during a conversation. We have solved the problem by switching DTMF mode to INBAND in the SPA 3102 config, in the PAP2 config and into Asterisk/FreePBX configuration. 1) In your SPA-3102 html interface, go to /admin/voice/advanced, Line 1 and PSTN Line and set DTMF Tx Method: INBAND in both places. 2) Since we have an asterisk extension mapped to the SPA-3102 Line1, we also went into FreePBX and set the dtmfmode to: "inband" for that extension. (was previously set to SIP-INFO) 3) We also have a SIP trunk in asterisk mapped to the SPA-3102 PSTN line. We went into FreePBX under "Trunks" and set the DTMF mode for that SIP trunk by adding "dtmfmode=inband" in both "Incoming Sett...
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