--- chan_dahdi.c	2010-02-24 14:40:56.000000000 -0300
+++ chan_dahdi.c	2010-02-24 14:44:44.000000000 -0300
@@ -12471,6 +12471,13 @@
 		p->generic_name[0] = 0;
 	}
 
+    snprintf(tmp, sizeof(tmp), "%d", p->called_nai & 0x7F);
+    pbx_builtin_setvar_helper(c, "SS7_CALLED_NAI", tmp);
+
+    snprintf(tmp, sizeof(tmp), "%d", p->calling_nai & 0x7F);
+    pbx_builtin_setvar_helper(c, "SS7_CALLING_NAI", tmp);
+
+
 	ast_mutex_lock(&p->lock);
 	ast_mutex_lock(&linkset->lock);
 }