Table 7: A part of phone-call log of User 1.

User IDStart timeEnd timeStatusReceiver ID

010-4135-xxxx2009-09-14 20:592009-09-14 20:59Sended010-7190-xxxx
010-4135-xxxx2009-09-14 20:542009-09-14 20:54Sended010-8563-xxxx
010-4135-xxxx2009-09-15 11:262009-09-15 11:26Sended010-7190-xxxx
010-4135-xxxx2009-09-16 18:182009-09-16 18:18Received010-2085-xxxx
010-4135-xxxx2009-09-16 18:082009-09-16 18:09Received010-7182-xxxx
010-4135-xxxx2009-09-16 16:102009-09-16 16:10Missed010-5378-xxxx
010-4135-xxxx2009-09-16 16:092009-09-16 16:09Sended010-5378-xxxx
010-4135-xxxx2009-09-16 18:182009-09-16 18:18Received010-2085-xxxx
010-4135-xxxx2009-09-16 18:082009-09-16 18:09Received010-7182-xxxx
010-4135-xxxx2009-09-16 16:102009-09-16 16:10Missed010-5378-xxxx
010-4135-xxxx2009-09-16 16:092009-09-16 16:09Sended010-5378-xxxx
010-4135-xxxx2009-09-17 15:282009-09-17 15:31Sended031-299-xxxx