Hello, I have a problem with transcoding. I would like to transcode speex@8000@20i to PCMA@8000@10i but it doesn't work. There are 3 freeswitch machines: A,B,C A --> speex@8000@20i --> B --> PCMA@8000@10i --> C The call setup is something like above. The call was established but after a few millisecs later it hanged up. If I change the speex to PCMA or I use ptime20 in everywhere then it works fine. A --> speex@8000@20i --> B --> PCMA@8000@20i --> C -- works A --> PCMA@8000@20i --> B --> PCMA@8000@10i --> C -- works So if I transcode from PCMA@20 to PCMA@10 then everything is fine, but with speex codec something is wrong. The "B" machine has hanged up the call with this error: mod_dptools.c:3234 Originate Failed. Cause: INCOMPATIBLE_DESTINATION FS version on the B machine: FreeSWITCH Version 1.5.13b+git~20140513T090047Z~cbe6f74fa9~64bit (git cbe6f74 2014-05-13 09:00:47Z 64bit) Does anyone facing this issue? What could be the problem? Is it a bug or the FS can't do this at all? Thank you for your help Adam