<div dir="ltr"><div><div class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div dir="ltr">Hello guys,</div><div dir="ltr"><br></div><div dir="ltr">I installed mod_gsmopen. When testing incoming call, it hangs up with this error message INCOMPATIBLE_DESTINATION. I understand this is a codec negotiation issue.</div><div dir="ltr"><br></div><div dir="ltr">Looking at the CDR - the gsmopen presented L16 8000 in the SDP. By default, FS does early negotiation. </div><div dir="ltr"><br></div><div dir="ltr">Snippet of my internal sip_profile:</div><div dir="ltr"><span class="" style="white-space:pre"> </span><param name="inbound-codec-prefs" value="$${global_codec_prefs}"/></div><div dir="ltr"><span class="" style="white-space:pre"> </span><param name="outbound-codec-prefs" value="$${global_codec_prefs}"/></div><div dir="ltr"><span class="" style="white-space:pre"> </span><param name="rtp-timer-name" value="soft"/></div><div dir="ltr"><span class="" style="white-space:pre"> </span><param name="rtp-ip" value="$${local_ip_v4}"/></div><div dir="ltr"><span class="" style="white-space:pre"> </span><param name="sip-ip" value="$${local_ip_v4}"/></div><div dir="ltr"><span class="" style="white-space:pre"> </span><param name="presence-privacy" value="$${presence_privacy}"/></div><div dir="ltr"><span class="" style="white-space:pre"> </span><param name="inbound-codec-negotiation" value="generous"/></div><div dir="ltr"><br></div><div dir="ltr">Take note: there is no disable-transcoding parameter which I understand FS is transcodind.</div><div dir="ltr"><br></div><div dir="ltr">In vars.xml:</div><div dir="ltr"><br></div><div dir="ltr"><X-PRE-PROCESS cmd="set" data="global_codec_prefs=G7221@32000h,G7221@16000h,G722,PCMU,PCMA,GSM"/></div><div dir="ltr"><X-PRE-PROCESS cmd="set" data="outbound_codec_prefs=PCMU,PCMA,GSM"/></div><div dir="ltr"><br></div><div dir="ltr">I tried to add L16 at the end of global_codec_prefs which is unnecessary, isn't it? But it didn't work, too.</div><div dir="ltr"><br></div><div dir="ltr">Finally, I added L16 in the softphone, it worked.</div><div dir="ltr"><br></div><div dir="ltr">I have installed gsmopen before and it worked (transcoding) with IP phones. </div><div dir="ltr"><br></div><div dir="ltr">Is there anything I may have missed? I appreciate for any leads.</div><div dir="ltr"><br></div><div dir="ltr">Thank you, </div><div><br></div><div>/Nandy</div></div></div></div></div></div></div></div></div></div>
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