<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-family: Calibri, sans-serif; "><div>I have an intermit issues with DTMF on my SIP trunk to the provider…</div><div>DTMF seams to be working on some numbers but not on others.. I know that the DTMF is leaving the system as it works on some numbers.</div><div>How would I start to trouble shoot this ?</div><div><br></div><div><br></div><div><br></div></body></html>