Hello! I have following problem: I get 160 Bytes Audio data (Format PCM A Law) from a Free Switch Session and save the data in a byte vector. At same time i get 160 Bytes Audio data (Format PCM A Law) from an external program and save the data in a byte vector. I want to merge the two audio data like a conference FreeSwitch Session mixed them. Can I use a Free Switch audio - Merge (C ++) Function ? How does Free Switch merge Audio Data in Conference mode ? regards Achim Stamm -- Achim Stamm, Dipl.-Inform. (FH) Lyncker & Theis GmbH Wilhelmstr. 16 65185 Wiesbaden Germany Fon +49 611/9006951 Fax +49 611/9406125 Handelsregister: HRB 23156 Amtsgericht Wiesbaden Steuernummer: 04323897052 USt-IdNr.: DE255806399 Geschäftsführer: Filip Lyncker, Armin Theis