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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'>Below
is required info:<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif"'>1. Which version of asterisk ,dahdi and
libss7 you installed<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif"'>Asterisk 1.6.2.7<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif"'>DAHDI Version: 2.3.0 Echo Canceller:<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif"'>libss7 version: 1.0.2<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif"'>2. OS Kernel Version<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif"'>Centos 5.4<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif"'>[root@asterisk4.uk:~]$ uname -r<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif"'>2.6.18-164.15.1.el5PAE<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif"'>3.IPTables and SELinux Status<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif"'>IPTables is fine. My softphone's ip range
is allowed. This was working before with ISDN.<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif"'>[root@asterisk4.uk:~]$ cat
/etc/sysconfig/selinux<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif"'># This file controls the state of SELinux
on the system.<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif"'># SELINUX= can take one of these three
values:<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif"'>#
enforcing - SELinux security policy is enforced.<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif"'>#
permissive - SELinux prints warnings instead of enforcing.<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif"'>#
disabled - SELinux is fully disabled.<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif"'>SELINUX=disabled<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif"'># SELINUXTYPE= type of policy in use.
Possible values are:<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif"'>#
targeted - Only targeted network daemons are protected.<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif"'>#
strict - Full SELinux protection.<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif"'>SELINUXTYPE=targeted<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif"'>4. Codec Status<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif"'>I am dialing from softphone -> asterisk
-> telsis using alaw codec.<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif"'>5.SIP.conf and extension.conf information<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif"'>sip.conf:<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif"'>[448714349151]<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif"'>type=friend<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif"'>username=448714349151<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif"'>secret=deepika<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif"'>disallow=all<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif"'>allow=alaw<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif"'>nat=yes<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif"'>host=dynamic<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif"'>canreinvite=no<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif"'>context=from-pstn<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif"'>call-limit=2<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif"'>extensions.conf:<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif"'>[from-pstn]<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif"'>exten =>
_1999001X.,1,Dial(DAHDI/g0/${EXTEN})<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif"'>6.<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif"'>Even if I enable below line in system.conf?<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif"'>#echocanceller=mg2,1-15,17-31<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif"'>I am getting below error:<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif"'>[May 19 12:55:59] WARNING[6187]:
chan_dahdi.c:2683 dahdi_enable_ec: Unable to enable echo cancellation on
channel 1 (No such device)<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-AU style='font-size:10.0pt;font-family:"Verdana","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-AU style='font-size:10.0pt;font-family:"Verdana","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-AU style='font-size:10.0pt;font-family:"Verdana","sans-serif"'>---<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-AU style='font-size:10.0pt;font-family:"Verdana","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-AU style='font-size:10.0pt;font-family:"Verdana","sans-serif"'>Kind
Regards,<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-AU style='font-size:10.0pt;font-family:"Verdana","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><b><span lang=EN-AU style='font-size:10.0pt;font-family:
"Verdana","sans-serif"'>Deepika Nijhawan<o:p></o:p></span></b></p>
<p class=MsoNormal><b><span lang=EN-AU style='font-size:10.0pt;font-family:
"Verdana","sans-serif"'>VoIP Engineer<o:p></o:p></span></b></p>
<p class=MsoNormal><b><span lang=EN-AU style='font-size:10.0pt;font-family:
"Verdana","sans-serif"'><o:p> </o:p></span></b></p>
<p class=MsoNormal><b><span lang=EN-AU style='font-size:10.0pt;font-family:
"Verdana","sans-serif";color:purple'>Oxygen8</span></b><span lang=EN-AU
style='font-size:10.0pt;font-family:"Verdana","sans-serif"'> Communications <o:p></o:p></span></p>
<p class=MsoNormal><b><span lang=EN-AU style='font-size:10.0pt;font-family:
"Verdana","sans-serif";color:black'>T:</span></b><span lang=EN-AU
style='font-size:10.0pt;font-family:"Verdana","sans-serif"'> +44(0) 871 434
9151<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-AU style='font-size:10.0pt;font-family:"Verdana","sans-serif"'>
+44(0) 121 620 9151<o:p></o:p></span></p>
<p class=MsoNormal><b><span lang=EN-AU style='font-size:10.0pt;font-family:
"Verdana","sans-serif"'>Email:</span></b><span lang=EN-AU style='font-size:
10.0pt;font-family:"Verdana","sans-serif"'> deepika.nijhawan@oxygen8.com<o:p></o:p></span></p>
<p class=MsoNormal><b><span lang=EN-AU style='font-size:10.0pt;font-family:
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