Transcript EG-5 - TMCnet

Voice over IP in a Shared
Satellite Environment
Dean Griffler, Vice President of Sales, Americas
iDirect Technologies
Reston, Virginia
February 2004
TDMA Value
TDMA Technology Provides Broadband IP Solutions To
Enterprises Anywhere in the World
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
Market Presence
TDMA Fills The Gap Between Narrowband and Dedicated SCPC
TDMA
Market Type
Narrow Band
POS
Broadband
SCPC
Access Method
Slotted Aloha
D-TDMA
Dedicated SCPC
Topology
Narrowband
Shared
Dedicated
Functions
Transaction/POS
Enterprise
Applications
Telco/Video
Broadcast
Data Rates
16K – 128K
Service
128K – 4.2Mb
1Mb – 44Mb
MRC
$120-$300
$400-$3,000
$8,000-$50,000
SCPC vs. Shared IP – Transmit Traffic Patterns
Single User Traffic Pattern (SCPC)
500
450
400
Inefficient and Costly Use of
Satellite Bandwidth because
IP Traffic Is Bursty and
Asynchronous.
350
Data
Rate
300
250
200
150
100
50
0
Time
Multi-User Traffic Pattern
500
450
400
Data
Rate
Efficient but requires mechanisms to
differentiate real time traffic from
non-real time traffic to ensure
proper application performance.
350
300
250
200
150
100
50
0
Time
Advantages of Shared Bandwidth Networks
Shared 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
5
Outroute
Group QoS Ensures proper priority across shared medium
Inroute
3
1
7
QoS, SAR, CIR
on the outroute
CIR (Static or Dynamic, application Triggered)
2
5
75
NM-1
4
Feathering of Timeslots minimizes jitter affects
Hub
2
SAR, Fragments and Interleaves to ensure proper dequeuing
NM-1
6
cRTP reduces overall
bandwidth required
1
QoS identifies, classifies and prioritizes traffic
Remote Site Configuration
Remote Site
Video
Network
Operator
Partner
10/100 Mbps
Ethernet
Switch
L-Band
IFL
VSAT
Antenna
PCs
10/100
Ethernet
IP Router
QoS
TPC Accelerator
Satellite Modem
3DES Security
VoIP
Phones
Simple Deployment…
• Integrated, single box connection to the LAN
• No power needed at VSAT Antenna
• Centrally Managed
• Enable Broadband Connectivity!
End-to-End Network Architecture
C or Ku-Band Satellite
Enterprise HQ
Remote Client Site
VoIP
Phone
Network Operator Teleport
LAN Switch
Remote Client Site
Router
VoIP
Phone
Remote Client Site
Internet/
Leased
Line/MPLS
VoIP
Phone
LAN Sitch
Remote Client Site
VoIP
Phone
LAN Switch
Applications – VoIP
5IF Hub
Chassis
VoIP Phone
Private or Managed
Service
Voice over IP Application Prioritized and Protected End-to-End
Enterprise Applications
Applications – WiFi (802.11x)
Seamless Wi-Fi and other IP-Infrastructure Integration
5IF Hub
Chassis
NetModem II+
VoIP Phone
MNC Headquarters
Private Dial
Private Domain
IP VPN
(MPLS based)
IPSec Gateway
Secure
Gateway
Regional Office
Roaming
User
Internet Dial
Public Domain
Internet Direct
Messaging
Application
Hosting
Server
Hosting
Enterprise Applications
MNC Supplier
Solution Options
Fixed
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 Studies
Provides 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.