Hello All, I'm not sure if this must be addressed to the user list but I apologize in advance. I'm getting the below error while in pass-through mode (proxy_media=true) but I get success when the disable transcoding is set on the sofia profile. [WARNING] switch_core_codec.c:703 Codec G723 Exists but not at the desired implementation. 8000hz 20ms [ERR] switch_core_media.c:2285 Can't load codec? I did hear about broken SIP devices out there but since it works fine when disable transcoding is set, I thought I give it a shot on the mailing list and while at it, this error does not occur in case of another pass-through codec(G729) Here are my settings when in proxy media mode: Sofia Profile: inbound-late-negotiation = true inbound-codec-negotiation = greedy (tried scrooge) I also tried rtp-autofix-timing=true (no luck) DialPlan: proxy_media=true bridge FS version tried: 1.5.13b & 1.2 Attached is full FS log for both the failed & successful calls. Your help or suggestion is very much appreciated. Best Regards, Ali_R