Sounds like you are using an outdated DAHDI module. There was a bug that was fixed for this already. Make sure you are using the latest DAHDI module in FreePBX.
The FreePBX DAHDi Config (dahdiconfig) module is actually 2.11.42 but it was updated nine days ago to 2.11.43 even if, AFAIK, it was not pushed out as a generally available update yet (and, just to be clear: I don’t really know if that 2.11.43 will rule out your issue as it appears to be related to Fix channel range for Analog T1 and add echocan info while the current 2.11.42 was released to address the FREEPBX-7437 Fix sangoma module bug as per dahdiconfig’s module.xml changelog).
It’s fixed in 2.11.42. You don’t need to reboot the system if you want to see if the selection is saving just save it and refresh the page and let us know. If it’s not saving then run:
]# amportal a dbug
Fetching FreePBX settings with gen_amp_conf.php..
trying to run as user asterisk:
[FPBXDBUGDISABLE] changed from previous value: [1] to new value: [0]
==> /var/log/asterisk/freepbx_dbug <==
==> /var/log/httpd/error_log <==
[Sun Jun 15 22:05:43 2014] [error] [client 69.174.245.163] File does not exist: /var/www/html/phpmyadmin
[Sun Jun 15 22:05:43 2014] [error] [client 69.174.245.163] File does not exist: /var/www/html/pma
[Sun Jun 15 22:05:44 2014] [error] [client 69.174.245.163] File does not exist: /var/www/html/myadmin
[Sun Jun 15 22:05:44 2014] [error] [client 69.174.245.163] File does not exist: /var/www/html/MyAdmin
[Mon Jun 16 04:26:38 2014] [error] [client 80.82.78.112] client sent HTTP/1.1 re quest without hostname (see RFC2616 section 14.23): /xmlrpc.php
[Mon Jun 16 11:02:14 2014] [error] [client 115.254.9.30] client sent HTTP/1.1 re quest without hostname (see RFC2616 section 14.23): /webdav/
/bin/mkdir: cannot create directory `/tftpboot/images': File exists
/bin/mkdir: cannot create directory `/tftpboot/images/originals': File exists
/bin/mkdir: cannot create directory `/tftpboot/images/formatted': File exists
/bin/mkdir: cannot create directory `/tftpboot/firmwaredownloads': File exists
Sorry, mad moment. Yes the settings did save but I still couldn’t see the card. However on logging off and logging back in I can now see the card. In short it has worked, thank you.
It would appear that you need to execute the “amportal a dbug” command, save the setttings and then logout and back in.