Thanks for this...
Although the fault looks like it's in the AGI, its actually in the code generator.
Here is a very quick patch for you to try....
in the module
/etc/e-smith/templates/etc/asterisk/extensions.conf/90-presets
at line 105 you will find...
$technology = 'Dahdi';
replace it with
$technology = 'Zap';
Now save your change and issue a commit from Globals panel.
Let me know if this fixes your problem
Kind regards
S