(Next Generation Network, NGN) , , (QoS) . NGN , . .
NGN.
NGN , (, , , ) . .
NGN . 1, [1]. : ( ), ( ), , ( ).
, : , . .. . (Softswitch), , . . .
.1. , , 5 - 10 % , .
, . - , .
1
NGN [], NGN , (MPLS). MPLS (MPLS VPN), .
|
|
VPN MPLS. (Virtual Routing Instance). BGP MPLS- , VPN. , , VPN, .
, BGP VPN, , . BGP VPN .
VPN IP-MPLS. , : MPLS, ( ), LAN (Virtual Switch Instance). VPN Ethernet, ATM, frame relay, PPP HDLC.
, ( ) . , (Value Added Services). , . NGN , .
? Cisco, : , . TDM, L2 ATM FR, VPN Internet IP-. , MPLS. SDH.
, IP- TDM- SDH, TDM. , , 2006 TDM.
(SDH ATM) ( ). , , IP-. NGN , , .
|
|
NGN
, , .
.
:
- (Media Gatways, MG)
(Signaling Gatways, SG) TDM . IP - .
- (Media Gatway Controllers, MGC Softswitchs) , .
NGN, .
2
.
- . .
, -, ,
, , 1/1, Ethernet, ATM . .;
/ (G.723.1, G.729, GSM ..);
;
.
- , , , TCP/IP .. , (DSP).
( SS7) MGC IP-. IP- . MGC, .
-
. . MG, . , . MG, , . Media Gatway Controller. , . MG , , , . Softswitch (SS7, V5, GR-303), H.323, SIP, MGCP, MEGACO.
|
|
, . Softswitch , , SG. Softswitch . SS7, E-DSS1, R1.5, V5, STP SP -7. , , , SIGTRAN, IETF. SS7 IP-. (Stream Control Transmission Protocol, SCTP), SP IP-; M2UA, M2PA, M3UA MTP; SUA SCCP, IP- SCTP SCCP SS7 (, TCAP INAP).
Softswitch : SIP (IETF) BICC (ITU-T). SIP.
, Softswitch, SIP, SS7, H.323.
- MGCP MEGACO/H.248.
3 NGN
:
1. .. NGN " ( - ',IJ,2003 .)
2. .. NGN.- # 24 / 2003.
3. , .- (http://www.minsvyaz.ru/img/uploaded/2002020610512757.pdf).
4. Softswitch - . http://www.niits.ru:8100/themes/convergension/convergension.htm
5. NGN .- http://siemens-ic.com.ua/news/0302.htm
6. .., .., .., .. . NGN// -.2003,- 6.
7. Gartner. " ".- http://celler.ru/forum/index/forum-22/topic-7420.html