Dear Steve, i found a little problem using your applications: audio gain of rxfax and iaxmodem (so chandsp related) are to higher on all asterisk channels so, I have to adjust it manually the ATA or PRI cards setup in Zapata.conf. Working in a simple context (ATA and PRI CARD only) I solved the problem but i have other problems when i also use the SIP channel. Now the question is: is there any way or something to patch to modify the gain on SPANDSP ? Maybe it solves all spandsp related problems. Thanks in advance.