I am proposing adding Call counters to Voicecall. Here is the TODO patch:

diff --git a/TODO b/TODO
index d9a6580..89e180c 100644
--- a/TODO
+++ b/TODO
@@ -329,6 +329,15 @@ Voicecall
    Complexity: C2
    Owner: Pekka Pessi <pekka.pessi@nokia.com>

+- Call counters. Provide total outgoing and incoming call duration 
information.
+  Separate call counters will be maintained for each SIM card. Call 
counters
+  can be read and reset to 0, and must be backed up periodically to a
+  non-volatile storage place.
+
+  Priority: Medium
+  Complexity: C2
+  Owner: Andras Domokos <andras.domokos@nokia.com>
+