Fellow List,<br><br> Hi! Good day, I have cross a configuration nightmare for a couple of days of finding what really broke my setup, i have given a task on replacing our legacy pbx with asterisk.<br><br>The problem i have encounter during the transition from legacy to IP based PBX is DTMF detection not working realiably on the following scenario<br><br>Failed Scenario<br><br>PAP2-NA - SIP -> TDM400 -> PSTN<br><br>Successfull Scenario<br><br>PAP2-NA -> SIP -> FWD -> -PSTN<br>PAP2-NA -> SIP -> SIP Carrier -> PSTN<br><br>My PAP2-NA Firmware is 3.1.12 LS<br> <br> When i test this with siemens optipoint 410 it was clear that DTMF issues might be on PAP2 Since it really wrecks on the other end<br><br>Solution:<br><br> After googling for a day i found no real answer for this problem when i talk to linksys tech support when i say i'm using my Asterisk as my SIP GW, they say that PAP2 wasn't meant to be compatible to asterisk or might
be an Asterisk bugs. <br><br>What i did is banging the phone and back to my web browser and continue my journey. this time i finally decided to play around with PAP2-NA firmware<br><br> I search on google if somebody has an OLD firmware hoping this will be fix.<br>I found one 3.1.3 LS firmware which this is the default firmware upon buying this stuff.<br><br>To my surprise it works like a charm after successfully downgrading the firmware from 3.1.12 LS to 3.1.3 LS<br><br> To all of you guys out there PLEASE DON'T UPGRADE YOUR FIRMWARE Linksys might intentionally do this on purpose ^__^ or this might be *BUG* i doubt it.<br><br>Best Regards,<br><br>Joy<br><br><br><br><br><br><br><br><br><br><br><br><br><p> 
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