I'm currently using Asterisk behind a NAT. The only service I get to work more or less (for outbound) is Iconnecthere. Everything seems to be working, but I get this: WARNING[229389]: File dsp.c, Line 1107 (ast_dsp_process): Unable to detect proce ss 2 frames NOTICE[229389]: File rtp.c, Line 326 (ast_rtp_read): Unknown RTP codec 19 receiv ed WARNING[229389]: File dsp.c, Line 1107 (ast_dsp_process): Unable to detect proce ss 2 frames ... and so on, rapidly passing by in hundreds, during the whole conversation. What do these errors mean? Thanks Stig Hess