Hi all, i compiled and configured all (mISDN, lcr, asterisk, etc...), unfortunately, when i try to place a call from the softphone to the MS, i can ear only the voice originated from the laptop to the MS and not viceversa. I'm using it on an Ubuntu 10.4, Asterisk 1.6.2.5 and the others sources from "last git".   Configurations:   - extension.conf: http://pastebin.com/mHH46HbQ  - sip.conf: http://pastebin.com/SkPN3z6q  - gsm.conf:  http://pastebin.com/C1Eckdgh  - interface.conf: http://pastebin.com/ctGapa1F  - options.conf: http://pastebin.com/6xhgL0P1  - routing.conf: http://pastebin.com/TVNvwTEB Logs:  - osmo-nitb's log:  http://pastebin.com/X10B5NjE   - lcr's log:  http://pastebin.com/uLY9VAiB - Asterisk's log: http://pastebin.com/8qzw6aMn As you can see from Asterisk, there is a mismatch: "NOTICE[2315]: channel.c:2960 __ast_read: Dropping incompatible voice frame on lcr/1 of format alaw since our native format has changed to 0x0 (nothing) " I tried to set alaw / ulaw on the configurations, to change efr, fr and amr, but it didn't change nothing. Ideas or hints for further investigations are welcome. Regards, Luca