owg003411 sccp signaling analysis and process issue1.0.ppt

8/9/2019 OWG003411 SCCP Signaling Analysis and Process ISSUE1.0.ppt

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OWG003411 SCCP

Signaling Analysis and

Process

ISSUE 1.0


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Chapter 1 General

Chapter 1 General

Chapter 2 Features and Functions of SCCPChapter 2 Features and Functions of SCCP

Chapter 3 Addressing and Routing Functions of SCCPChapter 3 Addressing and Routing Functions of SCCP

Chapter 4 Brief Introduction to SCCP Message ForatChapter 4 Brief Introduction to SCCP Message Forat


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1.1 Limitation o !"P "ransmission

"#e signaling $oint code is not t#e standard international code%

it is only eecti&e 'it#in a certain net'or(.

"#e limited ca$acity o t#e signaling $oint code )14*+it as

s$eciied +y CCI"", also limits t#e n-m+er o t#e signaling$oint to +e mar(ed.

"#e 4*+it SI can not satisy t#e increased re-irements o t#e

modern comm-nication as 'ell% since it can only +e assigned

to si/teen dierent -ser $arts.

inally% !"P can only $ro&ide t#e connectionless transmission


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1. "#e Location o SCCP in CCS2

W#en SCCP and !"P is com+ined toget#er% t#ey are

called as SP )net'or( ser&ice $art,.

SCCP and !"P*3 all locate in t#e net'or( layer o t#e

OSI model.


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Chapter 1 GeneralChapter 1 General

Chapter 2 Features and Functions of SCCP

Chapter 2 Features and Functions of SCCP




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eat-res and -nctions o SCCP

.1 A$$lication eat-res o SCCP

. Ser&ice -nctions o SCCP et'or(


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.1 A$$lication eat-res o SCCP

Ena+le to transer +ot# circ-it related and non*circ-it*

related signalling and -ser inormation in

telecomm-nication net'or(s.

Pro&ide en#anced addressing and ro-ting -nction% and

ena+le to ac#ie&e t#e direct glo+al transmission +et'een

dierent CCS2 net'or(s.

Ena+le to $ro&ide connectionless ser&ice and connection*

oriented net'or( ser&ice.


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"#ere are t'o (inds o ser&ice

$ro&ided +y t#e SCCP

$rotocol

Connectionless Ser%ice

Connection&'riented Ser%ice



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#he four classes are(

2 Basic connection&oriented class!

3 Flo) control connection&oriented class!

1 In&se*uence deli%er+ connectionless class!

, Basic connectionless class!



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In the connectionless ser%ice-

the routing inforation ust .e

contained in each data pac/et!

$o logical connection is

esta.lished .et)een theend nodes!

..1 Connectionless ser&ices


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#he connectionless SCCP offers t)o ser%ices(


"#e class 0 ser&ice allo's t#e SCCP to insert SLS &al-es

randomly% or 'it# t#e aim to ac#ie&e an a$$ro$riate loads#aring 'it#in t#e -nderlying !"P net'or(5

"#e class 1 ser&ice re-ires t#e SCCP to insert t#e same SLS

or all t#e SCCP*S6Us )ser&ice data -nit, associated 'it#

gi&en $arameters 7se-ence control7 and 7called address7.


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originating

SCCP

rela+

SCCP

terinating

SCCP

U6" U6"

U6" U6"

U6"

U6"Sail-re

SCCP procedure of connectionless class



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Connection&oriented net)or/ ser%ice is a )a+ to

reali5e the echange of signalling inforation .+

esta.lishing a logical signaling connection

.et)een the net)or/ ser%ice users!

#he logical signaling connection is achie%ed .+

gi%ing a local reference nu.er to the signaling

essages .elonging together!

.. Connection*oriented ser&ice


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originating

SCCP

relay

SCCP

terminating

SCCP

C8 C8

CC CC

6"6"

6" 6"

A9A9

8SL6 8SL6

8LC 8LC

.. Connection*oriented ser&ice


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Addressing )ith in the SCCP of CCS6

a/es use of three separate eleents(

PC7

Glo.al #itle 8G#97

Su.&S+ste $u.er 8SS$97

3 Addressing and 8o-ting -nctions o SCCP


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SPA

S#PB

S#PC

SP

A eaple(



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4 Brief Introduction to

SCCP Message Forat


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8o-ting la+el

!essage ty$e code

!andatory $arameter A

............

!andatory $arameter I

Pointer to $arameter !

................

Pointer to $arameter P

Pointer to start o o$tional $artLengt# indicator o $arameter !

Parameter !

..........

Lengt# indicator o $arameter P

Parameter P

Parameter name:;

Lengt# indicator o $arameter ;

Parameter ;

..........

Parameter name: ?

, , , , no special options

, , , 1 to , 1 1 1 spare

1 , , , return essage on error

1 , , 1 to 1 1 1 1 spare

=rie Introd-ction to Im$ortant Parameters o SCCP !essage


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"a.e

Message #+pe80#9

Protocol class

called part+ address pointer

calling part+ address part+

data pointer

called part+ address length

called part+ addresscalling part+ address length

calling part+ address

data length

data8#CAP9

F C; SIF "I FIB FS$ BIB BS$ F

!essage E/am$le


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> 2 ? @ 4 3 1

8eser&ed

ornational-se

8o-ting

indicator

Glo+al

titleindicator

SS

indicator

Point

codeindicator

Address indicator


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,,,, ,,,, SS$ not /no)n@not used

,,,, ,,,1 SCCP anageent

,,,, ,,1, Reser%ed for I#0 allocation

,,,, ,,11 IS$ user part IS0P

,,,, ,1,, 'peration- aintenance andadinistration part 8'MAP9

,,,, ,1,1 Mo.ile application part MAP

,,,, ,11, Doe location register D"R

,,,, ,111 Eisitor location register E"R

,,,, 1,,, Mo.ile s)itching centre MSC

,,,, 1,,1 !!! !!! 1111 111, Idle

1111 1111 Reser%ed for e3pansion of nationaland international SS$

SS


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,,,, glo.al title not contained

,,,1 glo.al title onl+ contains address indication

,,1, glo.al title onl+ contains translation t+pes

,,11 glo.al title onl+ contains translation t+pes-nu.ering plan and encoding schee

,1,,Glo.al title onl+ contains translation t+pes-

nu.ering plan- encoding schee and natureof address indicator

,1,1F111, Reser%ed for international

111,F1111 Reser%ed for e3pansion

G" Code


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> 2 ? @ 4 3 1

8eser&ed

ornational

-se

8o-ting

indicator

Glo+al

titleindicato

r

SS

indicator

Point

codeindicator

Address Indicator


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8311 03 0 0@ 06,=1 ,3 , 1=

0B 12 06 00 12 04 68 31 39 31 00 00 ,A 12

,6 ,, 12 ,4 >= 31 , 4, >6 2A >2 2= 4= ,4

2B =1 11 ,, >C =, A1 =, ,2 ,1 ,, ,2 ,1

,2 3, 1> ,4 ,= >4 ,, 3, 31 ,= ,, ?1 F4 =1,> 1 >= 31 , 4, >6 ,, ,, ,, ,,

#his is a SCCP essage .egan )ith SI'!

message e/am$le


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owg003411 sccp signaling analysis and process issue1.0.ppt

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