Paulus Djatmiko Indonesia
The Beginning IP Network Signaling Traffic Voice/Video Traffic
The Promise Move your network to IP Increase your capacity Increase your revenue
The Promise Plug n Play Any to Any Connectivity All you need is Ethernet t port Abundant Capacity 10 Mbps 100 Mbps 1000 Mbps Superior Quality Latest voice codec Clear voice experience Cheap Ethernet is cheap Resilient Build in redundancy High availability
Reality Bites Plug n Pray Capacity? Quality, really? n x 100Mbps access Delay & Jitter does not 100 Mbps uplink? reflect quality Spanning Tree problems Routing Loops problem The Promise vs Reality Bites Moving to IP is not a simple task Additional efforts required to ensure smooth migration Cheap For pre-existing IP infrastructure Resilient. Period. Redundant. Not.End.To.End.
Evolution: All The Way IP Elements Core Elements People & Process Successful IP Transformation
Evolution: IP Detail Design High Availability Standardization d High Performance Design Considerations i
Evolution Standardization Standardize all aspects of deployment: Cabling Naming convention Hardware placement Module insertion Parameter Port allocations Name Hardware Name cs-[site].[id] VLAN Description [subnet].[service] Interface Description [ip].[endpoint[endpoint interface id] VRF Name VPN_[service] Cable Label [source port/hostname]-to- [destination port/hostname] Patch Panel Label [Device id].[module]-[port]
Evolution High Availability Eliminate Single Point of Failure, early in the development End to end redundancy Link redundancy Chassis / box redundancy Interface redundancy Software redundancy People redundancy?
Evolution 20 Gigabit x 2 High Performance Calculate expected performance from all angles: Hardware capacity vs Real hardware capacity Link bandwidth vs Uplink bandwidth Payload codec being used Expected user behaviour 48 port Ethernet Formula (Total MGW* 2G) * (outbound traff/inbound traff) + sig bw + oam bw + charging bw } = -------------------------------------------------------------------------------------------------------------- 0.75
Evolution Typical lpayload dassumptions: 33% of all subscriber simultaneously calls In 2007, 10% subscriber make calls over IP, 2% of calls is video In 2008, 33% subscriber make calls over IP, 5% of calls is video In 2009, 67% subscriber make calls over IP, 10% of calls is video In 2010, 100% subscriber make calls over IP, 20% of calls is video Voice call bandwidth = 40kbps (AMR) Video call bandwidth = 192kbps (H.264m codec)
Evolution Typical Bandwidth per Service: Subscriber Applications i Bandwidth Required H.264m video call 192 kbps AMR voice call 40 kbps GSM voice call over IP RAN O 53 kbps Internet VoIP Interactive Gaming Video on Demand Broadcast TV (SD TV) HDTV MPEG 4.500 15Mbps 1.5 30Kbps 100 Kbps 128k 60Mbps 6.0 3.0 6.0 Mbps 3.0 5.0 Mbps 6.0 7.0 Mbps
Evolution Graphic of Total Required Bandwidth: Voice and Video 160 4,500.0 140 120 100 80 60 40 20 40000 4,000.0 3,500.0 3,000.0 2,500.0 2,000.0 15000 1,500.0 1,000.0 500.0 Subscriber [million] Subcriber Over IP [million] Simul Call [million] Voice+Video call [Gbps] 0 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 -
Step By Step Phase 1 Transform Signalling to IP Phase 2 Transform Voice Payload to IP Phase 3 Transform Video Payload to IP
Transformation Signaling Network (Current) Tier 2 (Legacy STP/ IP STP) Tier 1 (Legacy STP) Tier 2 (Legacy STP/ IP STP)
Transformation Signaling Network (Step 1) Tier 2 (Legacy STP/ IP STP) Tier 1 (Legacy STP) Tier 2 (Legacy STP/ IP STP)
Transformation Signaling Network (Step 2) Tier 2 (Legacy STP/ IP STP) Tier 1 (Legacy STP) Tier 2 (Legacy STP/ IP STP)
Transformation Voice/Video Traffic Other operators Gateway MSC MSCs 2G RAN MGw IP Core Network IP Core Network
Transformation Voice/Video Traffic Other operators Gateway MSC MSCs 2G RAN MGw IP Core Network
Transformation Voice/Video Traffic Other operators Gateway MSC MSCs T MGw 2G RAN MGw IP Core Network
Are We Done Yet? Delay Jitter Userperceived voice quality Voucher Transaction Success Rate Packet Loss Bandwidth Charging Success Rate SMS Delivery Queue Delay KPI VS KQI
Mobile Telephony over IP Media Requirements Carrier Class Mobile Telephony Tl end to end d Quality Requires MOS => 4, R => 80 Latency Jitter Mouth to ear delay must not exceed 400ms (<150ms preferred) Jitter must not add delay beyond allotment in overall delay budget Packet loss Dependent on codec, sample size(ms) and use of Packet Loss Concealment (PLC) or Forward Error Correction (FEC) GSM EFR 0% Packet loss to retain toll quality G.711 0.5% Packet loss w/ PLC
ITU T G.108 Speech Quality Categories R value to MOS score correlation R rating 90 100 80 90 70 80 60 70 50 60 Quality Category Best High Medium Low Poor User Satisfaction Very satisfied Satisfied Some users dissatisfied Many users dissatisfied Nearly all users dissatisfied MOS 43 4.3 45 4.5 4.0 4.3 3.6 4.0 3.1 3.6 2.6 3.1 0 50 Not recommended 1 2.6 Computational vs Experienced Voice Quality metrics
Enhanced OSS Service Management Layer Problem Escalation Trouble Ticket Automatic Trouble Ticket Creation Root Alarm Cause Event Correlation Network Management Layer Fault and Performance Performance data Completed Alarm Data Element Management Layer Config Polling Network Elements Layer End-points Performance data Backbone Performance data SNMP Fault trap Inventory Polling
F C A P S Configuration / Change Management / Inventory Ch M / Accounting/Provisioning Visionael CiscoWorks Cisco ACS Cisco ISC Cisco ACS SIEM SMARTS HP NNM Remedy Concord ehealth Netflow Collector / NAM NGOSS Initiative Security Availability / Capacity y/ Fault Performance Concord Traffic Accountant
Success Key Business Process Spare parts Dedicated Personnel Performance Parameter & Security Design and Topology Availability Performance Quality Monitoring Tools
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