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3GPP TS 24.228 -- IMS Signalling flows for session initiation: Non Hiding

CS-O / S-S#2 / MT#2   (page 3 of 3)

- CS Network originated Session routed towards IM CN subsystem, through MGCF
- Single Network Operator performing Origination and Termination
- Mobile Termination, located in home network
CS-O / S-S#2 / MT#2
1) INVITE (UE1 to UE2) 2) 183 Session Progress 3) PRACK (UE1 to UE2) 4) 200 OK   Prev Next
5) UPDATE (UE1 to UE2) 6) 200 OK 7) 180 Ringing (INVITE) 8) PRACK (UE1 to UE2)     a)
9) 200 OK 10) 200 OK (INVITE) 11) ACK (UE1 to UE2)     p.#1 Top

fig7

7a)  from UE2 to P-CSCF2   (a) (b) (c) (d) Prev Next Up

fig7a

7b)  from P-CSCF2 to S-CSCF2   (a) (b) (c) (d) Prev Next Up

fig7b

- Record-Route: the P-CSCF rewrites the Record-Route header field value to remove the port number and the comp=sigcomp parameter from its own entry.
7c)  from S-CSCF2 to I-CSCF1   (a) (b) (c) (d) Prev Next Up

fig7c

7d)  from I-CSCF1 to MGCF1   (a) (b) (c) (d) Prev Next Up

fig7d

CS-O / S-S#2 / MT#2
1) INVITE (UE1 to UE2) 2) 183 Session Progress 3) PRACK (UE1 to UE2) 4) 200 OK   Prev Next
5) UPDATE (UE1 to UE2) 6) 200 OK 7) 180 Ringing (INVITE) 8) PRACK (UE1 to UE2)     a)
9) 200 OK 10) 200 OK (INVITE) 11) ACK (UE1 to UE2)     p.#1 Top

fig8

8a)  from MGCF1 to S-CSCF2   (a) (b) (c) Prev Next Up

fig8a

8b)  from S-CSCF2 to P-CSCF2   (a) (b) (c) Prev Next Up

fig8b

8c)  from P-CSCF2 to UE2   (a) (b) (c) Prev Next Up

fig8c

CS-O / S-S#2 / MT#2
1) INVITE (UE1 to UE2) 2) 183 Session Progress 3) PRACK (UE1 to UE2) 4) 200 OK   Prev Next
5) UPDATE (UE1 to UE2) 6) 200 OK 7) 180 Ringing (INVITE) 8) PRACK (UE1 to UE2)     a)
9) 200 OK 10) 200 OK (INVITE) 11) ACK (UE1 to UE2)     p.#1 Top

fig9

9a)  from UE2 to P-CSCF2   (a) (b) (c) Prev Next Up

fig9a

9b)  from P-CSCF2 to S-CSCF2   (a) (b) (c) Prev Next Up

fig9b

9c)  from S-CSCF2 to S-CSCF1   (a) (b) (c) Prev Next Up

fig9c

CS-O / S-S#2 / MT#2
1) INVITE (UE1 to UE2) 2) 183 Session Progress 3) PRACK (UE1 to UE2) 4) 200 OK   Prev Next
5) UPDATE (UE1 to UE2) 6) 200 OK 7) 180 Ringing (INVITE) 8) PRACK (UE1 to UE2)     a)
9) 200 OK 10) 200 OK (INVITE) 11) ACK (UE1 to UE2)     p.#1 Top

fig10

10a)  from UE2 to P-CSCF2   (a) (b) (c) (d) Prev Next Up

fig10a

10b)  from P-CSCF2 to S-CSCF2   (a) (b) (c) (d) Prev Next Up

fig10b

10c)  from S-CSCF2 to I-CSCF1   (a) (b) (c) (d) Prev Next Up

fig10c

10d)  from I-CSCF1 to MGCF1   (a) (b) (c) (d) Prev Next Up

fig10d

CS-O / S-S#2 / MT#2
1) INVITE (UE1 to UE2) 2) 183 Session Progress 3) PRACK (UE1 to UE2) 4) 200 OK   Prev Next
5) UPDATE (UE1 to UE2) 6) 200 OK 7) 180 Ringing (INVITE) 8) PRACK (UE1 to UE2)     a)
9) 200 OK 10) 200 OK (INVITE) 11) ACK (UE1 to UE2)     p.#1 Top

fig11

11a)  from MGCF1 to S-CSCF2   (a) (b) (c) Prev Next Up

fig11a

11b)  from S-CSCF2 to P-CSCF2   (a) (b) (c) Prev Next Up

fig11b

11c)  from P-CSCF2 to UE2   (a) (b) (c) Prev Next Up

fig11c

  
Last update: December 31, 2007 
  
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