The document outlines a generic architecture for telecommunications networks, covering various technologies such as PSTN, GSM, 3G, and WiMAX. It details user modules, terminal controllers, switches, and network interfaces involved in these systems. The architecture emphasizes different layers, including copper infrastructure, radio network components, and internet protocols.

1. Telecommunication Network
Architechture
Generic architechture for PSTN,
GSM, 3G and WiMax

2. Generic Architechture (simplified)
User module Terminal Controller Switch Network
Interface Interface Interface Interface Interface
Subscriber Other
User Terminal
Identity Controller Switch Networks
Terminal Server
Module
Typically
Copper
Copper
Copper
Wire Cross Concentrator Fixed Public Switched
ISUP
POTS
Wire
Wire
Connection Switch Telephone Networks
Typically
Public Switched
A-bis
GSM Base Station Base Station Mobile Switching
Um
ISUP
A
R
(BTS) Controller (BSC) Center (MSC) Telephone Networks
ISUP Public Switched
Iu, Gb
Radio Network Core Network Telephone Networks
UMTS
Uu
R
Node-B
Controller (RNC) (CN)
TCP / IP Internet
R3 / R5
Base Station
R1
R6
WiMax ASN Gateway TCP / IP Internet
R
(BS) Home NSP
Copper
Typically
Ethernet
ADSL
Wire
Modem BRAS TCP / IP Home NSP TCP / IP Internet