Voice over IP in a Shared Satellite Environment Dean Griffler, Vice President of Sales, Americas...
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Transcript of Voice over IP in a Shared Satellite Environment Dean Griffler, Vice President of Sales, Americas...
Voice over IP in a SharedSatellite Environment
Dean Griffler, Vice President of Sales, AmericasiDirect Technologies
Reston, Virginia
February 2004
Voice over IP in a SharedSatellite Environment
Dean Griffler, Vice President of Sales, AmericasiDirect Technologies
Reston, Virginia
February 2004
Ubiquitous Worldwide Broadband Coverage
Rapid Deployment of Consistent, Secure, Business Class IP Access to
Any Business Location
Enterprise Class Communications
Consistent with terrestrial based IP infrastructure
Scalable, Reliable, Adaptable
Highest Quality of Service
Terrestrial class Quality of Service
Have Overcome Many Technical Hurdles That Have Plagued Previous
Satellite Technologies Such as The Effects of Latency, Real Time
Requirements and Bandwidth Inefficiencies
Provides for Secure Communications
TDMA Technology Provides Broadband IP Solutions To Enterprises Anywhere in the World
TDMA Value
Market Presence
MRC
Data Rates
Functions
Topology
Access Method
$120-$300
16K – 128K Service
Transaction/POS
Narrowband
Slotted Aloha
Narrow Band POS
Market Type
$400-$3,000
128K – 4.2Mb
Enterprise Applications
Shared
D-TDMA
Broadband
$8,000-$50,000
1Mb – 44Mb
Telco/Video Broadcast
Dedicated
Dedicated SCPC
SCPC
TDMATDMA Fills The Gap Between Narrowband and Dedicated SCPC
SCPC vs. Shared IP – Transmit Traffic Patterns
Multi-User Traffic Pattern
0
50
100
150
200
250
300
350
400
450
500
Time
DataRate
Efficient but requires mechanisms to differentiate real time traffic from
non-real time traffic to ensure proper application performance.
Single User Traffic Pattern (SCPC)
0
50
100
150
200
250
300
350
400
450
500
DataRate
Time
Inefficient and Costly Use of Satellite Bandwidth because
IP Traffic Is Bursty and Asynchronous.
Advantages of Shared Bandwidth NetworksShared Bandwidth Systems Gaining Favor– Highly Efficient and Cost Effective– But Challenging for Real Time Traffic
• Jitter• Delay• Packet Loss• Oversubscription (Bandwidth “Starving”)• Non-differentiated Packets (IP is IP) • Interference From Large Burst Data Traffic
Well Suited to Burstable Nature of IP Traffic
But, Controlled and Managed Access is Required for Real Time Traffic– Traffic Classification and Prioritization– Queuing Methods
Real Time Traffic in a Shared Environment
Requires a robust feature set necessary for the reliable transport of real time traffic– Deterministic Transport – Deterministic Time Division Multiple
Access (D-TDMA)– QoS (Prioritization of packets)
• Application QoS• Group QoS
– Dynamic CIR (Absolute guarantee)– Feathering Timeslot Allocation (Minimize Jitter)– Segmentation and Reassembly of IP Packets (Minimize Delay)– Compressed-RTP – cRTP (Efficiency)– TPC / Uplink Power Control (Reliability)
Real Time Traffic Management (RTTM) Feature Set
Hub
NM-1
OutrouteInroute
1 2 5 75
NM-1
66cRTP reduces overall bandwidth required
QoS identifies, classifies and prioritizes traffic11
SAR, Fragments and Interleaves to ensure proper dequeuing22
Feathering of Timeslots minimizes jitter affects44
CIR (Static or Dynamic, application Triggered)33
55 Group QoS Ensures proper priority across shared medium
77QoS, SAR, CIR on the outroute
Remote Site Configuration
Remote SiteRemote Site
10/100 MbpsEthernet Switch
Video
VoIPPhones
10/100Ethernet
VSAT Antenna
L-BandIFL
NetworkOperatorPartner
Simple Deployment…Simple Deployment…
• Integrated, single box connection to the LAN
• No power needed at VSAT Antenna
• Centrally Managed
• Enable Broadband Connectivity!
Simple Deployment…Simple Deployment…
• Integrated, single box connection to the LAN
• No power needed at VSAT Antenna
• Centrally Managed
• Enable Broadband Connectivity!
PCs
IP RouterQoSTPC AcceleratorSatellite Modem3DES Security
End-to-End Network ArchitectureC or Ku-Band Satellite C or Ku-Band Satellite
Network Operator Teleport Network Operator Teleport
LAN Switch
VoIP Phone
Remote Client Site Remote Client Site
Router
Internet/ Leased
Line/MPLS
Enterprise HQ
LAN Sitch
VoIP Phone
Remote Client Site Remote Client Site
LAN Switch
VoIP Phone
Remote Client Site Remote Client Site
VoIP Phone
Remote Client Site Remote Client Site
Applications – VoIP
Enterprise Applications
Voice over IP Application Prioritized and Protected End-to-End
5IF Hub Chassis
VoIP Phone
Private or ManagedService
Seamless Wi-Fi and other IP-Infrastructure Integration
NetModem II+
5IF Hub Chassis
VoIP Phone
Applications – WiFi (802.11x)
Enterprise Applications
MNC Headquarters
Internet Dial
MNC Supplier
Roaming User
Public DomainInternet Direct
IPSec Gateway
Secure Gateway
ServerHosting
ApplicationHosting
MessagingRegional Office
Private Domain
IP VPN(MPLS based)
Private Dial
Solution OptionsFixed
Antenna, BUC, LNB, Cable, Mounts
Fixed Mobile
Ease of configuration and setup
Maritime Mobile
Works with Stabilized Antenna
Swift Deploy
Rapid Setup
Ruggedized Cases
Case StudiesProvides contingency communications services to the Army and other DOD services
For Operation Iraqi Freedom, Tamsco provides satellite connectivity network to 52 sites Army’s Coalition Forces Land Component Command CFLCC) in Kuwait (operating for Iraq) for logistics tracking of equipment and parts.
Stratos, provides global communications services and solutions worldwide
StratosITek, provides next generation all-digital global connectivity.
Supports a range of communications solutions, including Voice-over-IP, file and database server access, Internet, video conferencing, and e-mail.
“Stratos specializes in providing enterprise customers operating in remote locations with a variety of superior wireless IP, data, and voice satellite solutions. We are excited about the ability to offer our new StratosITek technology to our customers,” said Jim Parm, Stratos CEO. “We feel that organizations of any size will be able to realize significant benefits from this global solution.”
Summary
Enterprises are increasingly demanding the same capabilities for their “off network” sites as those that can effectively ride on their terrestrial infrastructure.
Broadband-based satellite solutions that are optimized for TCP-IP offer the capability for providing voice, data, and video services to these sites.
While such capability has traditionally been provided with dedicated bandwidth (CIR’s), the cost of such services more often outweighed the need / benefit of the solution.
Shared, oversubscribed satellite services, taking advantage of the bursty, asynchronous nature of IP, can provide such services in a cost effective manner.
However, in order to provide enterprise-class voice (as well as other real time solutions) on such a network, requires a thorough understanding and implementation of a robust set of real time management features.
Such services, based on the IP-based iDirect technology are available today to provide such a solution.