Thng 12/2003 VNPT (Cng ty Vin thng Lin tnh VTN) lp t xong giai on 1 mng NGN, s dng gii php SURPASS ca Siemens, v i vo vn hnh thnh cng. y l mng c h tng thng tin duy nht da trn cng ngh chuyn mch gi c VNPT la chn thay th cho mng chuyn mch knh truyn thng. Vi u th cu trc phn lp theo chc nng v s dng rng ri cc giao din API kin to dch v m khng ph thuc nhiu vo cc nh cung cp thit b v khai thc mng, cng ngh NGN p ng c yu cu kinh doanh trong tnh hnh mi l dch v a dng, gi thnh thp, u t hiu qu v to c ngun doanh thu mi. y l mng s dng cng ngh chuyn gi vi c tnh linh hot, ng dng nhng tin b ca cng ngh thng tin v cng ngh truyn dn quang bng thng rng nn tch hp c dch v thoi v dch v truyn s liu. nng cao hn na nng lc ca mng li, VNPT quyt nh u t xy dng tip pha 2, v n ngy 15/08/2004 hon thnh v a vo s dng. T u nm 2006 VNPT trin khai NGN xung cc tng i v h thng truyn dn ni ht v d kin t nm 2008 n 2010 s chuyn i hon ton sang mng NGN. Vi gii php SURPASS ca Siemens, mng NGN do VNPT trin khai s c 4 lp l: lp truy nhp, lp chuyn ti, lp iu khin v lp ng dng.

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NGN Management

SURPASS NG Management

NGN ControlNGN ControlMedia Gateways Application/ Video ServersSwitch Switch Switch

SURPASS NG Switching

PSTN/ Mobile Network

NGN Core

IP/Optical Backbone

SURPASS NG OpticsAccess Gateway

NGN Access

Media Gateway

Metro Optics

Multi-Service AccessTriple Play Voice, Video, Data CPE

SURPASS NG AccessPBX

LAN

Residential Customers

Business Customers

Cc lp trong gii php SURPASS ca SIEMENS Lp truy nhp: c trin khai gm mt Media Gateway kt ni vi mng PSTN phc v cho dch v VoIP v b BRAS kt ni trc tip vi thit b DSLAM-HUB vi kh nng chuyn mch 10Gb/s, s dng cng ngh xDSL, c th h tr cc kt ni ADSL, SHDSL. Vi h tng mng xDSL ny, VNPT cung cp cc dch v truy nhp Internet bng rng Mega VNN ti nhiu tnh/thnh ph trn c nc. Cc loi Media Gateway c s dng trong m hnh ca SIEMENS: SURPASS hiG 1050: dung lng 16 lung E1/T1 (480/368 knh VoIP) SURPASS hiG 1100: dung lng 16 hoc 32 lung E1/T1 (480/384 n 960/786 knh VoIP) SURPASS hiG 1200: dung lng 24.000 knh VoIP

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V tr cc Media Gateway trong m hnh SURPASS ca SIEMENS Ngoi ra, nhm cung cp cc dch v mi nh IPTV, Video on Demand (VOD) v ng thi vn cung cp mt gateway cho mng li NGN, gii php Multiservice Access Node (MSAN) c s dng. MSAN cung cp kt hp cc dch v trn nn cc cng ngh truy nhp khc nhau nh POTS, ISDN, ADSL, SDSL, SDH, l giao din cho c mng li c sn v NGN. Trong m hnh SURPASS, cc thit b MSAN hay SURPASS hiX 56xx cung cp cc dch v nh Internet tc cao xDSL, VoIP, HDTV hay bt k dch v no khc ti khch hng. Cc thit b MSAN c s dng trong m hnh ca SIEMENS: SURPASS hiX 5635: cung cp ti a 1080 cng ADSL2+/VoIP. SURPASS hiX 5630: cung cp ti a 576 cng ADSL2+/VoIP. SURPASS hiX 5625: cung cp ti a 360 cng ADSL2+/VoIP.

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M hnh ng dng MSAN trong gii php ca SIEMENS. Lp chuyn ti: gm 3 nt trc quc gia t ti H Ni, TP. H Ch Minh v Nng v 11 nt vng t ti cc tnh/thnh ph trng im khc vi bng thng cc tuyn trc v vng l (STM-1) 155Mb/s da trn truyn dn SDH. Hin ti bng thng tuyn trc nng cp ln STM-16 (2.5 Gb/s) da trn Ring 20Gb/s / WDM. Ba Router li M160 Juniper t ti H Ni, HCM, Nng c kh nng chuyn mch l 160Gb/s. Lp iu khin: gm hai Softswitch HiQ9200 t H Ni v H Ch Minh. H thng Softswitch bao gm cc chc nng v iu khin h thng mng, cung cp cc giao din m d dng cho vic pht trin cc ng dng dch v, h tr nhiu loi giao thc iu khin khc nhau nh MGCP, H.323, Megaco/H.248, SIP, ... H thng cc Server ng dng (tu theo tng loi hnh dch v Server ng dng c th t tp trung hoc phn tn). Bn cnh h thng qun l mng tp trung v h thng tnh cc tp trung gp phn quan trng trong qun l, vn hnh v iu hnh mng.

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Softswitch trong m hnh SURPASS ca SIEMENS Lp dch v/ng dng: VNPT cung cp mt lot cc dch v nh: dch v th tr trc 1719, dch v 1800, 1900, v nhiu dch v gia tng khc. Hng pht trin m rng mng NGN ca VNPT: - M rng mng NGN 61 tnh v thnh ph, tng cng nng lc mng trc, cc ng truyn ni router li vi nhau, router li vi router vng s c tng ti STM-4 v STM-16, tng cng nng lc cc h thng lp iu khin, cc dch v lp ng dng v c bit l m rng h tng xDSL cho tt c cc tnh cn li vi phm vi vn ti mi huyn th. - Thc hin th nghim v thay th cc tng i lp 5 bi cc Gateway ca NGN. - Cung cp nhiu dch v hn nh IP Centrex, hi ngh Web ... - Ngoi ra, trong chin lc hnh thnh tp on vi cc Tng cng ty vng, VNPT s trin khai cc mng NGN ni ht ti cc th ln nh H Ni v

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TP. H Ch Minh. Mng NGN ni ht khng ch kt ni lin mng vi NGN ton quc m cn khai thc chung h tng IP/MPLS vi mng Metro Internet cng s c xy dng ng thi. Hin nay Cng ty Thng tin Vin thng in lc EVNTelecom cng ang tin hnh xy dng mng NGN t thng 4/2005 theo gii php SURPASS ca Siemens vi 02 Softswitch (ti TP HCM v H Ni) v 40 MediaGateway. V m hnh mng tng t VNPT, cng c kh nng cung cp mi dch v m VNPT c th cung cp. i vi cc cng ty khc nh Viettel, SPT cng ang c cc nh hng xy dng mng NGN ca h.

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