ims platform & call flow

Ericsson Internal | 2012-09-11 | Page 1

Ims: Platform & call flow

Ericsson Internal | 2012-09-11 | Page 2

PLATFORM FOR IMS NODES:

Platforms Nodes

TSP 6 (Dicos and Linux) CSCF 5.0, SLF 2.0 MRFC 5.0, HSS 5.0

IPWorks 6.0 on SUN Netra 240 Or IS 2.0(SUN Solaris, Linux)

DNS/ENUM

SUN HW (SUN Solaris) EMA 5.4, MM 6.0, OSS-RC 7.1.2

HP HW (Linux) MRFP 1.2

IS 2.0 (Linux) SBG 3.1 MGC 6.0/6.1 MGW 2.0

Ericsson Internal | 2012-09-11 | Page 3

TSP and IS are Ericsson platforms IPWorks is an Ericsson Software platform.

These are implemented on SUN hardware or IS and it is used for DNS/ENUM.

All plug-in units are provided with dual - 48V power, duplicated 1/10 GBpS Ethernet and a maintenance bus, via the EGEM.

O & M: S/W & H/W INTERFACES

Ericsson Internal | 2012-09-11 | Page 4

TSP PLATFORM VIEW:

Ericsson Internal | 2012-09-11 | Page 5

Architectural Overview About IMS Common system (ICS) Core Nodes Networking

Ericsson Internal | 2012-09-11 | Page 6

Architectural Overview About IMS Common system (ICS) Core Nodes Networking

Ericsson Internal | 2012-09-11 | Page 7

Interfaces

Ericsson Internal | 2012-09-11 | Page 8

S-CSCF

Home A

2. REGISTER 9. Unauthorized

P-CSCF Visited A

10. Unauthorized1. REGISTER

I-CSCF5. REGISTER

8. Unauthorized

A

GGSN

SGSN

Radio Access Network

SIP-AS

Application level Registration

HSS

3 46

7

Registration

Ericsson Internal | 2012-09-11 | Page 9

P-CSSFVisited B

S-CSCF

Home A

1. INVITE

2. INVITE8. INVITE11. OK

13. OK

15. OK

P-CSCFVisited A

16. OK

S-CSCF

Home B

I-CSCF

7. INVITE

12. OK

4. INVITEI-CSCF

3. INVITE

14. OK

A Calls B

5 6

B

HSS

A

9. INVITE10. OKGGSN

SGSN

Radio Access Network

GGSN

SGSN

Radio Access Network

SIP-AS

Session Establishment

SIP-AS

Call Flow

Ericsson Internal | 2012-09-11 | Page 10

Call flowPSTN / PLMN Interworking

Ericsson Internal | 2012-09-11 | Page 11

SHUBHABRATA MUKHERJEE

1ST LA- LGI & ZIGGO