<div>Dear , all expert</div><div> </div><div>I have a problem with R2(DTMF) connection the solution is 1 port to Telco 1 port to NEC</div><div> </div><div>so the problem is NEC can't detect answered call to billing system and can't transfer the call from operators</div>
<div> </div><div>then NEC engineer said "that is the problem from polarity reversal" can anyone tell me </div><div> </div><div>how to configuration for polarity reversal in asterisk with Sangoma A102 ?<br clear="all">
<br>-- <br></div><div>Best regards<br><br>»ÔÂÇÔ·Âì ¤ØéÁ¤Ãͧ (àÍÊ)<br>Piyawit Khumkrong (S)<br>Technical Department<br>AISTelebiz Co.,Ltd<br>Tel.(+66)0-2946-1490 Ext.905<br><a href="mailto:piyawit@aistelebiz.com" target="_blank">Email:piyawit@aistelebiz.com</a></div>
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