verisign ip connect connecting communities of interest internet telephony conference (vp-02 and...
TRANSCRIPT
VeriSign IP Connect Connecting communities of interest
Internet Telephony Conference (VP-02 and VP-03 Sessions)
Sean Kent – Product ManagerEmail: [email protected]
Tel: (703)346-9907
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Agenda
Technical Issues of VoIP Peering
(VP-02) Thursday 01/26/06 12:30-1:15PM
VoIP Peering Business Case Studies
(VP-03) Thursday 01/26/06 1:30-3:15PM
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VeriSign Know-How
Long history of proving peering services▪ Recent acquisitions inter-carrier mobile messaging
Inter-carrier short messaging (SMS) experience▪ Taught mobile operators it pays to cooperate▪ VeriSign practiced in core components of peering
VoIP peering products (IP Connect) launched Fall’04▪ Peering across broadband, cellular and enterprise networks
Integration of company assets “One VeriSign” initiative ▪ Dot-com/-net DNS registry platform▪ SS7 network and databases ▪ Inter-carrier roaming and messaging
Directory SecurityConnectivity Mediation
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Lessons Learned
Security▪ Most security appliances (B/SC) do not scale down to enterprise ▪ Very few support encryption (TLS and SRTP)
Directory▪ Many carriers’ own intra-community VoIP traffic traverses PSTN!!!▪ Should leverage existing number management systems▪ Not as simple as storing telephone number and associated URL
Mediation ▪ End to end IP calls often do not trigger PSTN databases▪ Poor interoperability across enterprise
Connectivity▪ Poor quality unacceptable for cheap dial tone ▪ ISP-CLEC peering in co-location centers
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Intra-Community Centralized Policy Server
Central repository of subscription and topology information▪ Regulates operating costs (scales operations, enables forced on-net)
Combination of ENUM and IMS specifications ▪ Number block/pool route selection (destination, origination, time, cost)▪ Subscription discovery, one or more service URIs per user ▪ Callout (service trigger) to PSTN/PLMN databases
Trunk Gateway
Call Agent/SoftswitchPSTN/PLMN
Centralized Routing Directory
PSTN Breakout Gateway/Border Element Selection Intra-Community Service and Location Discovery Trigger SIP/ENUM reachable PSTN Databases
Application Server
CNAM LNP
PSTN Databases
HLR
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Tier 2 discovery (SPid or NS record)
Inter-Community TN2URL Mapping
Tier 1 (common directory) resolves number ownership▪ Industry data sources (number pools and portability) ▪ Service provider supplied “Authoritative List” (overrides industry data)▪ TN to SPid or TN to NS Record (Tier 2 ENUM Server)
Border Element
Call Agent
Border Element Call
Agent
Tier 2 ENUM Server
Tier 2 ENUM Server
Tier 1 ENUM Server
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2
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IP Peering Exchanges
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5
Service Provider A Service Provider B
3Service and location discovery (NAPTR record)
LERG and NPAC TN to SPid industry data
“Authoritative List” manually entry or bulk upload via portal
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Data Partitioning
Peering managed by way of data types▪ Classification specifies level of sharing
Data classifications ▪ Private – visible only to enterprise/service provider (intra-domain)▪ Restricted – visible to “closed user group” of peers (restricted inter-domain)▪ Federated – visible to all publishing to directory (unrestricted inter-domain)
DA
TA
PA
RT
ITIO
N
Secure Self-Management Portal- Upload service provider’s dial plan or
enterprise’s corporate directory- Optionally establish closed user group of
peers or opt all-in peering with all
Peering entities may query one another’s topology data but may not view one another’s data via portal
Peers
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Enterprise Peering
Introduction of inter-working equipment on customer premises▪ Security and interoperability across major equipment vendors
Routing Directory
Self-Management Portal- Publication of corporate directory- Management of peering enterprises
Security- Application level NAT (topology hiding)- Signaling encryption (TLS)
Interoperability - Legacy PBXs- H.323 inter-working w/ SIP- Vendor variants
Signaling encryption (TLS) Authentication (HTTP Digest) Private dial planTelephone # to URL address resolutionFault tolerant routing and load balancing
Enterprise A (Site 2)
Enterprise B
Inter-Enterprise
Intr
a-E
nte
rpri
se
Enterprise A (Site 1)
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Agenda
Technical Issues of VoIP Peering
(VP-02) Thursday 01/26/06 12:30-1:15PM
VoIP Peering Business Case Studies
(VP-03) Thursday 01/26/06 1:30-3:15PM
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State of VoIP Peering Market
PSTN replacement slow not explosive growth▪ Forced on-net weak VoIP community still small
International termination loosing steam▪ Toll bypass marginalized thru price erosion
Local and fixed-mobile convergence gaining momentum▪ Cheap dial-tone bundled local and long distance▪ International demand for country code “1” telephone numbers▪ Domestic and international roaming bypass (dual mode roam to Wi-Fi)
The players▪ CLECs altering business model to include wholesale VoIP▪ ISPs marketing telephony services to subscriber base▪ Portals with advertisement revenue model add voice to grow user base
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Positioning
In-network value proposition enhances CLEC or IPX service▪ PSTN bound calls forced on-net between customers ▪ Value increases as size of community grows (# of telephone numbers)
Addition of voice to enterprise extranets▪ Sharing of corporate dial plans▪ Exchange rich media (voice, video, presence & IM) within supply chain
Disaster recovery services▪ Automatic or manual switch to backup site▪ Target market include financial institutions
Bundle w/ other managed services ▪ Integration w/ IN Databases (Calling Name…)▪ Fixed-mobile convergence (SMS, MMS,
cellular roaming clearing/settlement…)
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VoIP Peering Ecosystem
Partner ▪ Internet Peering Exchange (QoS-enabled Interconnect)
VeriSign ▪ Registry Services (Topology Publication)▪ Security Services (Topology Hiding)▪ Interoperability (Protocol and Vendor Variants)
Customers ▪ Service Provider (ISPs…)▪ Enterprise verticals (financial institutions…)
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In Network Value Proposition
Mobile network operators successful “In-Network Calling” rate plans▪ Inexpensive “sticky” method of attracting and keeping customers
Private peering solution▪ Allows CLEC or IPX to establish club of peering customers ▪ Force off-net calls on-net and save customer added expense of PSTN
Network Routing Directory
Broadband Telephony
User Communities
Web Portal(self-management - manual entry or bulk upload)
Member opts into the managed peering “club”, publishing their address space to all
members or a sub-set of members
Private IP Peering Exchange
Voice (RTP) Traffic
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IP Enabling Trader Voice Networks
Trader systems interconnect w/ resilient Session Initiation Protocol (SIP)▪ Ring down/hotline dial plan▪ Sites connected over redundant IP backbone
Near real-time MAC and improved reliability (disaster recovery)▪ Calls switched seamlessly between TDM (Turrets) and IP (transport)▪ Simultaneous or sequential ring down
Turrets
Proxy Server[1] (SIP Forking)
Simultaneous Ring (Primary/Backup)
Voice Gateway
Redirect Server[1] (Network Routing Directory)
Telephone Number to URI Mapping
Managed IP Network[1]
Primary Site
Disaster Recovery Site
Primary Gateway
Backup Gateway
Ingress Egress
[1] All core network systems deployed to geographically redundant dispersed sites.
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Fixed Mobile Convergence
Launched in early 2004 and branded Wireless IP Connect▪ Building market experience thru live trials▪ Mobile operators, internet service providers and universities
Serving-MSC model (Roaming to Wi-Fi)▪ Microsoft Windows Mobile Pocket PC (HP iPAQ and i-mate PDA2K)▪ SIP based soft-phone client manages handset radio interfaces ▪ Protocol inter-working function performs SIP to MAP interoperability
(TLDN to IP mapping)
(TLDN call setup)
(TLDN discovery)
(Presence update)
(Inbound Call)
SS7 Network
Gateway-MSC
HLR
PBX/Media Gateway
IS-41/SIP Peering (Interoperability) Enterprise
Mobile Network
PSTN
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2
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DID On-Demand (Peering CLECs and ISPs)
Acquiring local numbers is difficult▪ FCC has historically required CLEC certification to obtain numbers▪ Numbers assigned in thousands blocks by rate center – ITSPs often do
not have a sufficient customer base in any region to use a block▪ Complex porting issues and government reporting requirements
Acquiring local numbers is expensive ▪ ISDN PRIs to connect to the media gateway▪ Unnecessary long-distance switched access costs
VeriSign’s DID-On-Demand service gives ITSPs a single source for
ordering and provisioning telephone numbers (DIDs) ▪ Service allows the allocation of phone numbers on an as-need-basis
CLEC ISP/ITSP
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