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ISSUEISSUE
Fixed Network Curriculum
Development Section
UA0001 SG7000 System Overview 1.11.1
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Foreword
Trend of the communication network development
Concept of G
!ocation of SG7000 in G
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Lesson Goal
Know about the concept of NGN
Understand the function of SG7000
Master the principle of SG7000
After this lesson, you can
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Lesson !ontents
!hapter " NGN #$er$iew
!hapter % SG7000 Syste& #$er$iew
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!hapter " NGN #$er$iew
Section " Networ' de$elop&ent trend and
NGN o$er$iew
Section % Location of SG7000 in NGN
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Networ' (e$elop&ent )rend and NGN #$er$iew
NGN, short for& of the Ne*t Generation Networ', is a 'ind of ser$ice+dri$ennetwor'
Ser$ice and call control are co&pletely separate, so are the call control and
bearer
-t is a brand new networ' inte.rated with $oice, data, fa* and $ideo ser$ices
)he unifor& of NGN can be inte.rated with co&&unication, infor&ation, e+
co&&erce and entertain&ent ser$ices, brin.in. the interacti$e drea& into a
truth
)eleco& networ', co&puter networ' and cable )/ networ' are ulti&ately &er.ed
into a unifor& - networ', that is the so+called 1$oice2data2$ideo 3+in+" networ'4
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)rend of NGN
Open architecture with inte"rated multimedia services
Stepless network with simplified O#$ and mana"ement
%ast deployment of new services to synchroni&e the market
chan"e
'(in(1 network construction concept to concentrate investment
in a uniform network platform
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NGN Model
G model dia"ram
Soft Switch
switch
Soft Switch
switch
AT$ S) AT$*+, GS-*TS-
SS7
SG T$G A$G +A. $G)
)ireless
access/roadand
access,ST*+S.
Access
Transfer
Service
application
OSS*/SS AAA server SC, App Server 'rd ,arty Server ,olicy
Server
Control
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NGN Features
!ayered fully(open network architecture independent modular
structure
Completely separate service and call control call control and
earer
Uniform protocol ased packet network system
+, network earer
Separate "ateway system
SG A$G and T$G
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-nterconnection between 5*istin. Networ' and NGN
+nterconnection of media flow 2such voice data and ima"e3
+nterconnection of si"nalin"
13 /oth G and e4istin" networks must use the same
application layer si"nalin" protocols 2such as TU, and
+SU,35
'3 Si"nalin" messa"es can e transmitted seamlessly
etween the two network types6 4istin" network and G5
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!hapter " NGN #$er$iew
Section " Networ' de$elop&ent trend and NGN o$er$iew
Section % Location of SG7000 in NGN
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Location of SG7000 in NGN
Used in the access layer in G
)ith complete S+GT-A and SS7 protocols
Connected to narrowand telecom e8uipment with traditional
narrowand network interface and standard o5 7 si"nalin"
protocol
Connected to G e8uipment with packet network interface and
standard S+GT-A protocol to implement the +, earer of o5 7
si"nalin"
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Location of SG7000 in -ndependent Gateway Model
SG7000 in separate "ateway model
SS7
!ircuit
SS7
!ircuit
S
)
N
S
)
N
- networ'
SG SG
MG MG
MG! MG!
S-G)6AN S-G)6AN
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SG7000 Functions
arrowand
si"nalin" earer
TU,* +SU, 9 TU,* +SU, 9
S)N2LMNS)N2LMN switch Soft switchSGSG
arrowand
si"nalin"
earer
/roadand
si"nalin"
earer
/roadand
si"nalin"
earer
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Lesson !ontents
!hapter " NGN #$er$iew
!hapter % SG7000 Syste& #$er$iew
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!hapter % #$er$iew of the SG7000 Syste&
Section 1 %eatures of the SG7000 ,roduct
Section : SG7000 etworkin" Applications
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Fle*ible !onfi.uration and 5asy Networ'in.
Accordin" to the actual network re8uirement of the
user it can e used in fi4ed network or moile
network or in the case with inte"rated fi4ed and
moile network5
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u.e !apacity
$odules are smoothly e4panded to increase
si"nalin" links5
Supportin" up to ;1:0 kit*s si"nalin" links
Supportin" up to ':0 < : $it*s hi"h(speed si"nalin"
links
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i.h 6eliability
The SG7000 is e8uipped with a hi"hly reliale platform with
fully distriuted architecture and modular software functions5
-edundancy technolo"y is used in the system desi"n with
dual(ackup or load(sharin" for all key components5
)ith e4treme error tolerance capaility the fault with a sin"le
software*hardware unit in the system will not affect the
si"nalin" services of other units5?A mana"ement function is implemented on the platform
resultin" in a system reliaility aove 05@@@@@5
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!o&prehensi$e Functions
The SG7000 supports o5 7 si"nalin" protocol S+GT-A protocol TC,*+,
and thernet protocol and implements the interconnection etween o5 7
and +,5
The SG7000 can work as a si"nalin" a"ent point or si"nalin" transition
point and supports si"nalin" messa"es forwarded etween narrowand
network and +, network or forwarded in narrowand network5
The SG7000 provides messa"e screenin" GT translation and multiple
si"nalin" point functions5
The SG7000 supports => it*s and B570' : $it*s hi"h(speed si"nalin"
links 2includin" the it*s mode35
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S&ooth 5*pansion
The hardware is desi"ned in a structure of
superimposed modules5
/y means of shelf cascadin" it can e smoothly e4panded
up to ;1:0 links5
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5asy and ractical #8M
,rovidin" multiple maintenance modes such as GU+
and $$! and supportin" concurrent e8uipment
accesses from multiple local*remote clients
Comprehensive service statistics and realtime fault
mana"ement function
+nte"rated si"nalin" tracin" and messa"e interpretation
function
Supportin" uniform $ interface
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SG7000 !apacity -ndices
The SG7000 capacity indices are listed in the tale elow6
ara&eter -nde*$a45 links 2=>kit*s3 9"%0
$a45 links 2:$it*s3 3%0
GT capacity :00000
$a45 destination si"nalin" points 10:>$a45 narrowand si"nalin" link "roups ;1:
$a45 $'UA link "roups ;1:
$a45 narrowand si"nalin" routes :0>
$a45 $'UA si"nalin" routes ;1:
$a4 ASs 10:>
$a45 SCT, couplin"s :'0>
$a45 S,$Cs 2SG works in the si"nalin"transition point mode3
10:>
$a45 local si"nalin" points supported 1=
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SG7000 erfor&ance -ndices
,arameter +nde4
$a45 load of =>kit*s si"nalin" link 2:0yte*$SU3 05$a45 load of =>kit*s si"nalin" link 2100yte*$SU3 05@;
$a45 load of :$it*s si"nalin" link2:0yte*$SU3
05>
$a45 load of :$it*s si"nalin" link2100yte*$SU3
05
GTT capaility of =>kit*s si"nalin" link > 0GTT*s
GTT capaility of :$it*s si"nalin" link > 1>GTT*s
Transition delay 2etween narrowand networks3 < :0ms
Transition delay 2etween narrowand network and roadandnetwork3
< >0ms
8uipment availaility D@@5@@@E
Unavailale time F; minutes*year
$T, undetected error ratio < 10(10
$essa"e loss ratio at $T, fault < 10(7
$essa"e se8uence reversal and repetition ratio at $T, fault < 10(10
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hysical -nterface !haracteristics
Tale of the physical interface characteristics
-nterface type Access &ode
Circuit interface :50>$it*s =>kit*s
% interface 10*100$it*s
Clock interface :50>$ it*s :50>$ ?& kit*s
-S:': interface
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!hapter % SG7000 Syste& #$er$iew
Section 1 %eatures of the SG7000 ,roduct
Section : SG7000 etworkin" Applications
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Ser$ice Applications
The SG7000 supports o5 7 si"nalin" protocol S+GT-A
protocol TC,*+, and thernet protocol and implements the
interconnection etween o5 7 and +, resultin" in the o5 7
si"nalin" interconnection etween narrowand network
e8uipment and G network e8uipment5
The SG7000 can work in the a"ent mode and si"nalin"
transition point mode at the same time5
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Networ'in. in A.ent Mode
+n the a"ent mode the SG7000 uses the $'UA protocol5
)hen the $'UA protocol is used the SG7000 and soft switch
use the same si"nalin" point code5
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Networ'in. in A.ent Mode
etworkin" dia"ram in a"ent mode
!S
!S
ST,
ST,
SG
SoftH1
SoftH:
oint !ode "
oint !ode %
SS7
SS7
SS7
$:UA*$'UA
$:UA*$'UA
SG7000 networkin" in a"ent mode
Wor as a part of softswitch.
!isadvantage: "、 S# can$t %acup for Softswitch. & 、 we can$t get the status
report %etween S# and Softswitch. ' 、 S# (ust serve for one softswith) if we
want serve for other Softswitch )we must use multi*SPC function.
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Networ'in. in Si.nalin. )ransition oint Mode
The $:,A or $'UA protocol is used for the networkin" with
soft switch5
The SG7000 occupies independent si"nalin" point code5
Advantage:
SG is work as active and standby for Softswitch.
we can get the status between SG and Softswitch.
SG can serve for many softswitchs.
$ost case we use this $ode I
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Networ'in. (ia.ra&
etworkin" dia"ram in si"nalin" transition point mode
!S
ST,
SS7
SS7
!S
SoftH1
SoftH:
SG:
SG1
oint !ode "
oint !ode %
oint !ode 3
$:,A*$'UA
$:,A*$'UA
$:,A*$'UA
SG7000 networkin" in si"nalin"
transition point mode
Independent with softswitch
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Su&&ary
/asic concepts of G
!ocation of SG7000 in G
%eatures and networkin" applications of SG7000
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)han's:)han's: