Good afternoon,
Most of the time (about 75%) we can call a Customer/Vendor/etc that has an automated attendant, and we are able to make selections or choose extensions using DTMF on the keypad. Once in a while, though, we make a call and are not able to make a selection unless we wait until the auto-attendant on the receiving end finishes its spiel. Since our configuration isn't changing between calls, and I assume that our ITSP isn't changing configurations, I believe that DTMF is configured correctly in sipXecs (or else it wouldn't work right 75% of the time.) My theory is that the ITSP must have a number of FXO/FXS devices to connect VOIP calls into the POTS system. I'm guessing that they may vary somewhat in the quality of the DTMF tones they generate, and that different calls being routed to different FXO/FXS devices explains why sometimes DTMF works fine and sometimes it doesn't. Could I be onto something here, or is there a flaw in my reasoning? Mike Burden Lynk Systems, Inc e-mail: [email protected] <mailto:[email protected]> Phone: 616-532-4985
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