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NGN
Next Generation Network (NGN) is a service oriented network.
Through the separation of service and call control, the service- independent architecture is implemented, which makes services independent of switching network.
NGN provides integration of voice, data, fax, and video services.
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NGN (Contd)
In broad sense it refers to the next generation integrated network that adopts new technologies extensively, focuses on IP, and provides voice, data, and multimedia service at the same time.
In narrow sense it refers to the open system structure that employs soft switch at the control layer.
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NGN LAYER ARCHITECTURE
Edge Access
Core Switch
Network Control
Service Management
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NGN Network Architecture
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System capacityItem Specification
Maximum number of supported TDM trunks 360,000
Maximum number of supported gateways 2,000,000
Maximum capacity of supported black and white lists
1,000,000
Maximum capacity of supported external prepaid card numbers
1,000,000
Maximum number of supported subscribers
POTS subscribers: 2,000,000
V5 subscribers: 2,000,000
IPN subscribers: 200,000
IP consoles: 100,000
Maximum number of supported multimedia terminals
SIP terminals: 2,000,000
H.323 terminals: 1,000,000
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SoftX3000
IP MAN/backbone
TMG8010/UMG8900
C5 office C5 office C5 office
SS7 signaling network
SG7000
Other C4 office or toll office
M3UA
MTP
MTP
MTP
H.248/M2UA
ISUP trunk
ISUP trunkISUP trunkISUP trunk
H.248/M2UA
TMG8010/UMG8900
C4 OFFICE (PRESENT CONFIGURATION)
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SOFT SWITCH (SOFTX 3000)
As a SoftSwitch product, SoftX3000 is located at the core control layer of NGN scheme. SoftX3000 acts as a generic Call Controller in the packet-switched network, supports the interworking between PSTN,H. 323, SIP, and MGCP domains. SoftX3000 provides H. 248 and MGCP based bearer control. In the NGN solution of Huawei, SoftX3000 acts as the core of NGN, interworking with other NGN components through the open network adopting distributed standard protocols.
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COMPLETE NETWORK LAYOUT
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PHYSICAL STRUCTURE OF SOFTX 3000
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LOGICAL STRUCTURE OF SOFTX 3000
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TRUNKING DIAGRAM OF NGN
Soft Switch
Packet Core Network
SG7000
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MRS
IAD
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UMG E1 status at LX sideS.No UMG Total E1's (Installed H.W ) Planned E1's Working E1 's Pending E1's Spare E1's Status
1 Islamabad 308 290 205 85 28 connected & operational
2 Karachi 288 283 244 39 5 connected & operational
3 Abbotabad 64 26 18 8 38 connected & operational
4 Bahawalpur 96 84 28 56 12 connected & operational
5 Bannu 64 19 14 5 45 connected & operational
6 Burewala 64 29 29 0 35 connected but not tested
7 Faisalabad 160 120 110 10 40 connected & operational
8 Gujrat 64 54 19 35 10 connected & operational
9 Gujranwala 128 76 38 38 52 connected & operational
10 Hyderabad 64 64 52 12 0 connected & operational
11 Jehlum 64 16 16 0 48 connected & operational
12 Lahore 476 402 340 62 74 connected & operational
13 Mardan 64 28 28 0 36 connected & operational
14 Multan 128 101 79 22 27 connected & operational
15 Peshawar 128 124 100 24 4 connected & operational
16 Quetta 96 67 48 19 29 connected & operational
17 Sahiwal 64 41 25 16 23 connected & operational
18 Sialkot 64 58 46 12 6 connected but not tested
19 Sukkur 64 46 43 3 18 connected & operational
20 Sargodha 64 39 19 20 25 connected & operational
Total E1s 2512 1967 1501 466 555 connected & operational
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• UMG8900 supports inter-working between different bearer networks and provides conversion function between different traffic flow formats:
– UMG8900 can server as Trunk Gateway (TG);
– Act As Access Gateway (AG) in NGN network;
– Support Embedded Signaling Gateway (SG) function simultaneously.
• By networking with soft switching devices, UMG8900 can act as next-generation TDM switch adopting next-generation (NGN) architecture to provide all services of PSTN and achieve smooth evolvement to NGN.
UMG 8900 Functionality Features
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• UMG8900 serves as TG or AG in NGN or as the traditional PSTN switch and the next-generation switch.
• In NGN, UMG8900 is applied in the gateway exchange and toll exchange as large-capacity TG.
• Through the combined networking with soft switching device , UMG8900 can provide next-generation TDM switch application.
• MG8900 can act as tandem exchange / toll office / gateway exchange / C5 networking application of PSTN to implement the seamless evolution to NGN.
• Provides AG function of large capacity via RSP user frame of UMG8900 accesses user directly.
UMG 89000 (Cont’d)
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PROTOCOL STACK OF SOFTX 3000
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Interface Application Protocols
Signaling Transmission Protocols
SoftX3000-SG SIGTRAN M3UA/M2UA/SCTP/IP
SoftX3000-TMG H.248 UDP/IP 、 SCTP/IP 、 TCP/IP
SoftX3000-AMG MGCP UDP/IP
SoftX3000-IAD MGCP 、 H.248 UDP/IP
SoftX3000-MRS MGCP UDP/IP
SoftX3000-Terminal
MGCP UDP/IP
SIP UDP/IP
H.323 UDP/IP 、 TCP/IP
SoftX3000-SoftSwitch SIP UDP/IP
SoftX3000-PSTN/ISDN SS7 MTP
SoftX3000-SIP SIP UDP/IP
SoftX3000-H.323 H.323 UDP/IP 、 TCP/IP
SoftX3000-NMS MML -
SoftX3000-BC FTP or FTAM TCP/IP
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System processing capability
Item Specification
BHCA of a single service processing module
400k
BHCA of the system 16000k
Call drop rate 0.01%
Call setup time
Calls between intra-domain subscribers: 200 ms
Calls between both intra-domain subscribers and out-domain subscribers: 500 ms
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Services & Functions
SERVICES
• Voice Services• IP Centrex Services• Multimedia Services• IPN Services• IN based Value Added Services
FUNCTIONS
• Support for Multi-Country-Code and Multi-Area-Code Functions• Support for Multi-Signaling-Point-Code Function• Support for Dual-Homed Host Function• Support for Gateway Office Functions• Support for IP Supermarket Function
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OpenEye
AMG5000
U-Path
POTS
POTS PC
Centralized Subscriber Access Scheme
xDSL IAD IAD
PCPOTS POTS POTS
Distributed Subscriber Access Scheme
SoftX3000(end office)
MGCP/H.248SIP/H.323
MGCP/H.248MGCP/H.248
TMG
ISUP trunk SIP/SIP-T trunkPSTN / PLMN
OtherSoftSwitch
network
SIPPhone
H.323Phone
MGCP/H.248Phone
Individual Subscriber Access Scheme
MAN
MCUMRS
MGCP H.323
Private protocol
MULTIMEDIA END OFFICE APPLICATIONS
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SoftX3000
IP MAN
RSP device
UMG8900 UMG8900
POTS POTS POTS POTS
H.248
E1
H.248/V5UA
V5 access device
ONU
BSC
PBX and NAS
V5 V5 PRI/R2 PRI
NASPRX
H.248/IUA
UMG8900
RSP
ISDN ISDN
TMG8010/UMG8900
H.248/M2UA
ISUP trunk
C4 office
C5 OFFICE CONFIGURATION
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• Implementation of On-line billing in all the exchanges of Switching Zone Islamabad in ZTE B&CC project.
• Testing / Commissioning of NGN expansion phase.• Testing / Commissioning of Signaling gateway at NGN
for IP PPC services through FIN (fix IN) • Testing /Commissioning of MRS for the provision of IVRs
for IP PPC services through FIN (fix IN) • Improvement of ASR in national directions by the
augmentation of long haul media after a detail traffic analysis.
• Reduction of congestion point on local as well as nation wide directions.
• Termination of .25 (M) IP calls per day on NGN platform.
Achievements
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Ongoing Issues
• NGN status is currently under PAT• PAT of Softx 3000, UMG 8900,SG 7000 & MRS
has been completed. Discrepancy list comprising of Non Service affecting & some deficient features has already been forwarded to the vendor through Dig Dev wing.
• Connectivity with some UMG’s is still pending due to Media/hardware unavailability at the far end (LX side).
• Extension of NGN NMS room is required. Several civil works need to be done.