Its Incredible PBX I go to System Recordings and the file is PCM Encoded, 16 Bits, at 8000Hz wav file. I can use any extension. Is there one that is recommended? I did a ls -l and i didnt see it in there.
root@raspberrypi3:~ $ ls -l
total 228
-rwxr-xr-x 1 root root 4265 Jul 29 2014 add-fqdn
-rwxr-xr-x 1 root root 4665 Aug 10 18:44 add-ip
-rwxr-xr-x 1 root root 573 Aug 4 2014 admin-pw-change
drwxr-xr-x 4 root root 4096 May 12 2015 asteridex4
-rwxr-xr-x 1 root root 747 Jun 3 2015 avantfax-pw-change
-rw-r--r-- 1 root root 17988 Jul 6 2015 COPYING
-rwxr-xr-x 1 root root 2158 Jul 29 2014 del-acct
-rwxr-xr-x 1 root root 422 Nov 10 2015 GPG-patch
-rwxr-xr-x 1 root root 37 Dec 23 2012 iaxmodem-restart
-rwxr-xr-x 1 root root 3534 Sep 7 2014 incrediblebackup
-rwxr-xr-x 1 root root 19641 Mar 7 13:39 incrediblefax13_raspi3.sh
-rwxr-xr-x 1 root root 2878 Sep 7 2014 incrediblerestore
-rwxr-xr-x 1 root root 244 Dec 6 2012 initalboot
-rwxr-xr-x 1 root root 1639 Jul 29 2014 ipchecker
-rwxr-xr-x 1 root root 1431 Feb 27 16:10 iptables-restart
-rw-r--r-- 1 root root 1320 Dec 4 2002 jcameron-key.asc
-rw-r--r-- 1 root root 295 Aug 10 18:43 knock.FAQ
-rwxr-xr-x 1 root root 150 May 15 2015 logos-b-gone
-rwxr-xr-x 1 root root 390 Mar 4 06:01 model.sh
-rwxr-xr-x 1 root root 363 Feb 27 17:09 mysql-odbc
-rwxr-xr-x 1 root root 789 Feb 5 2015 mysql-sample
-rwxr-xr-x 1 root root 95 Dec 13 2012 neorouter-login
-rw-r--r-- 1 root root 1 Oct 30 2005 notnull.file
-rw-r--r-- 1 root root 0 Oct 30 2005 null.file
-rwxr-xr-x 1 root root 1830 Feb 27 17:09 odbc-gen.sh
-rw-r--r-- 1 root root 3191 Feb 27 17:09 odbc.ini
-rw-r--r-- 1 root root 280 Aug 10 18:43 passwords.FAQ
-rwxr-xr-x 1 root root 6959 Dec 13 2012 pptp-install
-rwxr-xr-x 1 root root 1660 Mar 5 16:07 proximity
drwxr-xr-x 8 root root 4096 Feb 27 16:59 pygooglevoice
-rw-r--r-- 1 root root 1141 Feb 27 17:09 res_odbc.conf
-rwxr-xr-x 1 root root 1946 Sep 23 2012 smsblast
drwxr-xr-x 2 root root 4096 Aug 10 2012 smsblaster
drwxr-xr-x 2 root root 4096 May 23 2012 smsdictator
-rw-r--r-- 1 root root 313 Dec 21 2012 smslist.txt
-rw-r--r-- 1 root root 16 Aug 10 2012 smsmsg.txt
-rw-r--r-- 1 root root 995 Apr 22 2009 timeclock.sql
-rwxr-xr-x 1 root root 7388 Jul 30 2014 timezone-setup
drwxr-xr-x 2 root root 4096 Feb 27 17:17 tm4
-rwxr-xr-x 1 root root 5500 Dec 13 2015 tm4-update
-rwxr-xr-x 1 root root 693 Feb 4 2015 update-my-pbx
-rwxr-xr-x 1 root root 5133 Mar 1 14:42 update-passwords
drwxr-xr-x 2 root root 4096 Feb 27 17:03 wolfram
-rwxr-xr-x 1 root root 797 May 2 2013 xmpp-fix