Sansay Company & Product
Overview
January 2013
Glen Gerhard
VP. Product Management
ggerhard@sansay.com
1
Company Overview
• Headquarters: San Diego, California
– Founded June 2002
– Also founders at Nuera Communications
• Deployed in over 300 production networks in
CLEC, MSO, and wireless carriers.
• VSX deployed in long distance, prepaid, E911, and
residential broadband applications
• SPX deployed in Hosted PBX, Wireless, Cable, and
IP-Centrex applications
• VSXi introduced December 2009: Internet
Telephony Product of the Year
2
Product Line Overview
• VSXi high performance session control
– RSX/CPX transitioning into ROME HRS/INX
– Highest CPS of any session controller
– Peering and Access Editions
• Transcoding
– MST for use with INX/CPX
– TSX for standalone use
• ROME HRS
– Intelligent and high capacity route server
– Capable of controlling other SIP devices
• ROME NLS
– High capacity LNP database server
3
Product – VSXi
• VSXi provides session control functionality
– Winner, Internet Telephony 2009, Product of the Year
• Key feature / functionality for service delivery
–
–
–
–
Topology hiding and prevention from DDOS attacks
Firewall & network address translation (NAT) traversal
Rich routing features and management of 30M+ routes
Protocol interworking with SIP and H.323
• Value-added applications
– SIP trunking, transcoding, mobile peering, & CALEA
• Deployment
– Provided in high availability configurations for non-stop
reliability / uptime; better than 99.999% in the field
– Single system for subscriber & network-facing
functions
4
INX System
• Capable of 50,000 sessions; 1400 CPS
• Service Ports: Virtual IPs for signaling/media
• HA designed for non-stop operations
Service Ports IPs owned by Active VSXi
5
Wholesale Termination
ROME
Wholesale
Termination
Partner
Do-NotCall
• High capacity: up to 1400
calls per second / node
LNP
• Flexible low cost georedundancy
IPX
Carrier
VSXi
VSXi
2G or 3G
Mobile Service
Provider
Fixed Line
Service
Provider
IP Network
4G VoLTE
Provider
• Intelligent routing:
includes Jurisdictional
routing on LRN & PAI
• ENUM, Do-not-Call, and
LNP dipping
• Can handle 30M+ routes
Wholesale
Termination
Carrier
ASP / Cloud
Service
Provider
• Intuitive GUI for rapid
implementation / training
• Optional transcoding by
route selection
Note: Distributed , geo-redundant deployment shown above.
6
Business Voice & SIP Trunking
Wholesale
Termination
Partner 1
Network-Facing
Session Control
Over-the-Top
Service
Delivery
• Subscriber and networkfacing session control in a
single system
Wholesale
Termination
Partner 2
VSXi
Feature Server
(e.g., BroadWorks)
IP Network
VSXi
VSXi
Business
Communications
Provider
SubscriberFacing Session
Control
FacilitiesBased Access
Network
• Highly flexible deployment
options to support distributed
network architectures
• Commercially deployed with
leading feature / application
servers / IPPBXs
• Proxy registrations or can
act as Registrar for feature
server(s)
• Billing and charging support
via CDRs
Hosted
IP PBX Subscriber
Hosted
IP PBX Subscriber
• Support Lawful Intercept /
CALEA
Note: Distributed deployment shown above. Subscriber and network-facing
functions can be managed on single VSXi system.
7
VSXi for Enhanced Applications
Wholesale
Termination
Partner 1
Wholesale
Termination
Partner 2
VSXi
Network-Facing
Session Control
Subscriber-Facing
Session Control
• Subscriber and networkfacing session control
IP Network
Enhanced
Services /
Prepaid
Server
VSXi
Over-the-Top
Service
Delivery
• Support Radius for prepaid and other real-time
billing applications
• Commercially deployed
with IVR and other
enhanced
communications apps
• High CPS for inbound /
outbound call center /
dialer applications
Note: Distributed deployment shown above. Subscriber and network-facing
functions can be managed on single VSXi system.
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Key Feature: DDOS Protection
• Automatically enforced
• Controllable timers allowing
blacklists for remote IPs
various block periods
• Intelligently applied to IP
• Applies to Registrations,
addresses or Subscriber, based
Invites, Subscribes, Option
on feature server response
polls and protocol errors
DDOS
Attacks
VSXi
VSXi
VSXi
Co-Location 1
Co-Location 2
Co-Location 3
DDOS
Attacks
Public Border Points
Provides Network Topology Protection and Resource Hiding
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Key Feature: Call Admission Zone
• Customer and vendor call admission control enforced across all
network elements on Trunk ID basis
– Can manage CPS, RPS and session count across pool of VSXi systems
– Configured in single GUI screen
Example: CPS capped at 100 cps for TID
10,000 – managed across Co-Lo 1, 2, & 3
Trunk ID
10,000
VSXi
VSXi
VSXi
Co-Location 1
Co-Location 2
Co-Location 3
Shared Pool of Sessions
Pooling of CPS, RPS and Session
Count per Trunk ID
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Key Feature: Network License
• VSXi “Network License Zone” shares a pool of session capacity
across a network of VSXi hardware
• Better support for geographic redundancy and distributed hardware
• Shown below: 6 nodes in 3 high availability pairs supporting 3
interconnect points - pool of sessions shared across all nodes
VSXi
VSXi
VSXi
Co-Location 1
Co-Location 2
Co-Location 3
Network License Zone
Session license capacity shared across all 6 nodes
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Network License Example
• Enables more efficient use of session capacity across nodes
• Shown below: network snapshot of traffic across 6 nodes that are
licensed for a total of 5000 sessions
Network Traffic Snapshot
750
sessions
750
sessions
3000
sessions
VSXi
VSXi
VSXi
Co-Location 1
Co-Location 2
Co-Location 3
Network License Zone
•
•
NLZ loading is 4500 sessions at snapshot
Each co-location better able to handle localized traffic bursts
using shared pool of buffer capacity
12
Modular System Design
• VSXi functionality can be distributed across specialized server
hardware (left) or deployed on an integrated server (right)
• Offers service providers maximum flexibility and scalability
HRS
Query
HRS: Route Management
INX: Call Processing
MSX: Media Processing
MST: Media Transcoding
INX
Signaling
Plane
SIP & H.323
Traffic
H.248
Media
Plane
INX for Sub Access or limited routing apps
Signaling
Plane
+
Media
Plane
INX
SIP & H.323
Traffic
RTP Traffic
RTP Traffic
MSX
MST
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GSMA IPX Operator
• Enables intelligent SIP-I session switching and
media optimization with Pathfinder ENUM
VoIP
MNO partner
Network A
#1
VSXi HA Pair
IPX Network Backbone
Neustar Pathfinder
MNO Network B
ENUM Route Lookup
SIP-I Call Setup
Media Path
14
MST2 Transcoder
• 1U server with Sansay DSP card
• Licensed on a network wide basis
• Transcoding session count is tracked along
with but separate from NLZ
• Provides added value for applications:
– Long tail echo cancellation up to 728 msec
– DTMF translations
– T.38 translations
15
MST2 Transcoder (cont)
• Highly scalable yet low cost per port
– Add up to 4000 sessions per 1U rack space
– N:1 redundant and NLZ make for lower TCO
• Integrated into TID config for easy routing
– Makes routing independent of codec concerns
• Redundant RTP (RRTP) for best OTT quality
• Video transcoding supported at limited size
16
TSX Transcoder
• Integrated INX/MST2 for easier deployment
• Has a new system type with limited functions
– This is similar to Peering Edition; ie, lower cost
• Still supports NLZ for redundancy and
building distributed networks
• HA Redundant for highly reliable POPs
• All DSP (audio) aspects are same as MST2
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Introducing ROME
• HRS – High-speed Route Server
• Centralized management of Routes
– Simplifies route management
– Improves system operating performance
– Expands number of routes operators can manage
• Enables more sophisticated routing
– Enables simple & flexible jurisdictional determination
– Supports up to 50 alternative routes
18
ROME Operations
• Stateless server, routes held in RAM for
extremely fast processing
• Queried via SIP protocol
• Route uploads do not affect system CPS
• Server updated / managed via GUI and SOAP
• VSXi can recurse with TID mode
– Provides compatibility with variety of policy
servers (Nuestar Pathfinder, ATT, etc)
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Functioning in the Network
• ROME can be added to existing VSXi network
ROME Accepts queries and provides
routes across INX nodes
Route Management
Layer
Update &
“Master-Slave”
ROME
ROME
Manage
Query & Route
Selection
INX
INX
INX
Session Processing
and Media
Management Layer
MSX
INX
• ROME typically
deployed at
Super POP or
core network hub
• ROME deployed
in LB mode with
Active-Active
systems
• Can also be
deployed in georedundant config
MSX
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HRS Routing
• Route process
Consortium
DNIS list
Invite:
DNIS/RN
OTG
DCC
Table
LERG based
Jurisdiction
Routing
Sequences
JD Assign
Tables
Route
Tables
300
Repsonse
DTG list
Consortium Match Found
21
Summary
• VSXi: key capabilities for operator profitability
– Engineered with deeper route management, superior calls per
second handling, and out-of-the box high availability
• Sansay: relentless focus on customer satisfaction
– Rapid development cycles and intro of new features
– Majority of sales driven by customer reference
• Succeeding vs. competition
– VSXi performance proven via direct testing vs. competitors
– Majority of operators who trial Sansay turn into customers
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