hi list can any one tell me how to make call behind the nat. asterisk on Public IP UAC on Private IP UAS on private IP UAC---------->Asterisk------------->UAS is this posible. when i am trying this it is not working it is saying to many hops one thing more from http://asterisk.org/index.php?menu=features Codecs * ADPCM * G.711 (A-Law & μ-Law) * G.723.1 (pass through) * G.726 * G.729 (through purchase of commercial license through Digium) * GSM * iLBC * Linear * LPC-10 * Speex what is the meaning of G.723.1 (pass through) Thanks Kamran Ahmad __________________________________ Do you Yahoo!? Yahoo! Personals - Better first dates. More second dates. http://personals.yahoo.com