Script failed when Callers Number was empty i.e. NoneType. Put a['Number'] into str() fixed this.

fritzab2matrix.py

@@ -124,7 +124,7 @@ def fritzab2matrix(tam):
     for a in messages:
         
         # format the information regarding the message
-        msg_info = a['Date'] + " - " + a['Number']
+        msg_info = a['Date'] + " - " + str(a['Number'])
         if a['Name']:
             msg_info += " (" + a['Name'] + ") "
             
@@ -172,7 +172,7 @@ def fritzab2matrix(tam):
         
 
 def multitam(tams):
-    time.sleep(5)
+    time.sleep(10)
     for tam in tams.keys():
         print("Check TAM {}.".format(tam))
         fritzab2matrix(tam)