1. How Traffic Moves over the Internet
● What is access concentrator ?
● What is PDA ?
s1170132 Manamu Abe
s1170133 Keigo Amma
s1170144 Ryo Kanno
s1170145 Masataka Kubota

2. What is access concentrator ?
Access concentrator
allows analog and
ISDN calls to come
in over one part from
the telephone
company.

3. What is PDA
● A personal digital
assistant (PDA) is a
mobile device.
● Many people have
mobile phone and
Many PDAs can
access the Internet.
So deep relation with
wireless and our life.

4. Reference
http://dictionary.zdnet.com/definition/remote+access+c
http://en.wikipedia.org/wiki/Personal_digital_assistant