Overview of Telecommunication networks presented by karim Moussaoui at Algiers Developer Meetup,

1. Overview of
Telecommunication
Networks

3. Radio Acess Network :
RAN
2G (GRAN)
3G (UTRAN)
BSC
RNC
BTS
NodeB
A bis
Iub
MSC
SGSN
A
Gb
Iu-CS
Iu-PS
MS
UE
Um
Uu

4. Core Network :
MSC1
SGSN2
MSC2
VLR1
VLR2
SGSN1
GGSN
PCRF
BSC
RNC
CS
PS
HLR/AuC/EIR
SMSC
SCP
USSD
GW
VMS
Other PLMN
GRX
Internet
MGW1
MGW2
Gr
E
C/D/F
Gs
Gp
Gi
Mc
A
Iu-PS
Iu-CS
Gb

5.  OSI vs Signaling System N°7 (SS7) :
Physical
Data Link
Network
Transport
Session
Presentation
Application
Physical
Ethernet
IP
TCP/UDP
HTTP
FTP
DNS
RIP
SNMP
OSI ModelTCP/IP Protocol stack
MTP1
MTP2
MTP3
SCCP
ISUP
TCAP
MAP CAP
SS7 Protocol stack
Point
Code
Global Title
( GT)
PC + SSN
BS
SA
PP

6. Sigtran ( SS7 over IP ) :

7. Call Flow :
• GSM Location Update :
http://
www.eventhelix.com/gsm/location-update/gsm-location-update-la-equipment-diagram.pdf
• GPRS Attach :
https://www.eventhelix.com/RealtimeMantra/Telecom/gprs_attach_pdp_sequence_diagram.pdf
• GSM Originating call :
http://www.eventhelix.com/RealtimeMantra/Telecom/GSM_Originating_Call_Flow.pdf
• GSM Terminating call :
https://www.eventhelix.com/RealtimeMantra/Telecom/GSM_Terminating_Call_Flow.pdf
• GSM SMS MO & MT :
http://www.eventhelix.com/gsm/originating-sms/gsm-mobile-originated-sms.pdf
http://www.eventhelix.com/gsm/terminating-sms/#.VjuGkLcvcdU

8. Thank
s