--- ./linux-3.10/net/avm_pa/avm_pa.c
+++ ./linux-3.10/net/avm_pa/avm_pa.c
@@ -5846,7 +5846,7 @@
 
 void avm_pa_telefon_state(int state)
 {
-   printk(KERN_INFO "avm_pa: avm_pa_telefon_state\n");
+   printk(KERN_INFO "avm_pa: avm_pa_telefon_state: %d (%s)\n", state, state ? "talk" : "hook" );
 }
 EXPORT_SYMBOL(avm_pa_telefon_state);