1. The Air Link ¶

1.1. Subscriber Unit ¶

1.2. Base Stations ¶

2. Voice Infrastructure ¶

2.1. Station Controllers ¶

2.2. Switching Centers ¶

2.2.1. The Home Location Register(HLR) ¶

2.2.2. The Visitors' Location Register(VLR) ¶

2.2.3. The Equipment Identity Register(EIR) ¶

2.2.4. The Authentication Center(AuC) ¶

2.2.5. The Messaging Center ¶

2.3. Trunking ¶

2.4. GateWays ¶

3. Data Infrastructure ¶

3.1. Packet Control ¶

3.2. Serving Support ¶

3.3. The GPRS Backbone ¶

3.4. The Gateway Node ¶

3.5. Optional GPRS Infrastructure ¶

3.6. GPRS Roaming ¶

3.7. Wired Access Points ¶

4. Server-Side Equipment ¶

4.1. Wap Gateways and Servers ¶

4.2. Unbundling and Virtual Networks ¶

4.3. Mobile E-Mail Gateways ¶

5. The Internet ¶

5.1. Internet Protocol Version 4 ¶

5.2. The IP Address Shortage ¶

5.3. Mobile IP ¶

5.4. Internet Protocol Version 6 ¶

5.5. Voice Over IP ¶

6. Summary ¶