MSC/VLR HLR/AuC

Any Location Any Location

Location Update (LU)with Authentication

(i) SAIN [beg]

(ii) SAIN [end]

(iii) UpLoc [beg]

(iv,1) ISD [cont]

(iv,n) ISD [cont]

(v) ISD [end]

(vi) UpLoc [end]

Signaling

Legend:

SAIN = Send Authentication Information

UpLoc = Update Location

ISD = Insert Subscriber Data

MSC/VLRHLR

Any LocationAny Location

Mobile Terminated Call (MTC)

(ii) PRN [beg]

(i) SRI [beg]

Legend:

SRI = Send Routing Information

PRN = Provide Roaming Number (MSRN)

SignalingTraffic

GMSC

MTC

Any Location

(iv) SRI [end]

(iii) PRN [end]

ISUP call

SMSC

Any LocationAny Location

Mobile Originated and Terminated SMS(SMS-MO and SMS-MT)

(iv) SRI for SM [beg]

(ii) MOFS [beg]

Legend:

SMS-MO = Short Message Service – Mobile Originated

MOFS = Mobile Originated – Forward Short Message

SRI for SM = Send Routing Information for Short Message

MTFS = Mobile Terminated – Forward Short Message

SMS-MT = Short Message Service – Mobile Terminated

Signaling

(i) SMS-MO

Any Location

(vi) MTFS [beg]

MSC/VLR HLR

(v) SRI for SM [end]

(iii) MOFS [end]

(viii) MTFS [end]

(iii’) SMS-MO [ack]

(vii) SMS-MT

(vii’) SMS-MT [ack]

A

B

MSC/VLR

Any Location Any Location

Supplementary Service (SS) ActivationExample: CFU (*21*)

(i) SAIN [beg]

(ii) SAIN [end]

(v,1) ISD [cont]

(v,n) ISD [cont]

(iii) RSS [beg]

(vii) RSS [end]

Signaling

Legend:

SAIN = Send Authentication Information

RSS = Register Supplementary Service

DSD = Delete Subscriber Data

ISD = Insert Subscriber Data

SDM = Subscriber Data Management

*21*…

(iv) DSD [cont]

(vi) SDM [end]

HLR/AuC

MSC/VLR

Any Location Any Location

Supplementary Service (SS) DeactivationExample: CFU (#21#)

(i) SAIN [beg]

(ii) SAIN [end]

(v,1) ISD [cont]

(v,n) ISD [cont]

(iii) DSS [beg]

Signaling

Legend:

SAIN = Send Authentication Information

DSS = Deactivate Supplementary Service

ISD = Insert Subscriber Data

#21#

(iv) DSS [end]

(vi) ISD [end]

HLR/AuC