Next generation network ( NGN )

1 - ( NGN ) :

.

Next Generation Network ( NGN ) .

.

( ) :

/1/

:

1. .2. (Voice packets ) ( TDM ) Time Division Multiplexing .3. .4. . NGN :

1. .2. .3. .4. .5. .6. . NGN ,

16.8 ~ 62Mbit/s Downstream 18 Mbps Upstream NGN .

:

1. 22% 2005 2009 .2. .3. .4. 48% IP 2005 2009 IP NGN . ( ZTE - HUAWI ) NGN Multimedia .

2 - ( NGN ) :

NGN Layers /2/ , /3/ NGN , IP SIP .

NGN :

1. ( Service Layer ) : .

2. ( Control Layer ) : Soft Switch Packet Switching :

SIP H323 H248 and MGCP

S S ( PDN ) Public Data Network .

3. ( Cove Network ) : PDN Switches Routers

Data Transmission , PDN Internet Access .

4. (Access Layer ) : ( ) .

:

1- :Multi Service Access Gateway

S S .

:

ADSL ADSL+2 VDSL SHDSL POTS Leased Lines .

2- : Media Gateway NGN .

TDM Packet IP NGN .

Signaling SS7 .

Billing NGN .

NGN .

/4/ /5/ ZTE :

/2/

/3/

/5/

3 - ( NGN ) :

PDN ( ) , NGN /6/ :

/6/

1- ( POTS ) :Plain Old Telephony Service AG

Access Gateway ( ) .

2- ( IP PHONE ) :Internet Protocol Phone VOIP .

3- ( VC ) :Video Conference Server (Chair man ) .

4- ( VP ) :Video Phone ( Real Time ) H323 SIP .

5- ( IAD ) :Integrated Access Device H323 ( ) , ( Ethernet Interface ) .

6- ( Soft Phone ) :

( ) , .

7- ( NGN ) :

:

( ADSL ADSL+2 VDSL HSDSL ) .

/

/

/

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