How To Successfully Implement IP Video SURA/ViDE 5 th Annual Digital Video Workshop March 26, 2003 ED STOCKEY IHETS Assistant Director, Product Research And Development

AGENDA HISTORY AND BACKGROUND QUALITY OF SERVICE (QoS) FIRE WALLS & PROXYS GATEKEEPERS/GATEWAYS DIAL PLAN CODECS DIRECTORY SERVICES REGISTRATION/SCHEDULING

IHETS: Basics Indiana Higher Education Telecommunication System Consortium of all accredited public and private postsecondary institutions in Indiana Created by enabling legislation in 1967 INDNET begun 1995 IHETS becomes Manager of the Indiana Telecommunications Network 1997 ITN serves all public institutions – this includes: Higher Education, K-12 schools, Public Libraries, State, County and Local government Total Sites Connected to ITN > 1,800

BACKGROUND TWO-WAY INTERACTIVE VIDEO –H.323 – IP VIDEO 2001 MCU TESTING – FALL 2000 RESULT: THEY ACTUALLY WORK!! RECOMMENDATION: Accord MGC 100 NEED TO LOOK AT THE VARIOUS ISSUES AND COMPONENTS NEEDED TO IMPLEMENT H.323 ON THE NETWORK – IP VIDEO TASK FORCEIP VIDEO TASK FORCE

Quality of Service (QoS) Challenges providing QoS for IP video –Head of line blocking (HOLB) –IP video uses UDP (universal datagram protocol) for transport of video and only uses TCP for control data – cannot resend lost video packets –Video uses large, variable length packets Bandwidth is not the complete solution

Video Conferencing Traffic Packet Size Breakdown (CIF) 37% Bytes 20% Bytes 34% Bytes 1% Bytes 8% Bytes 384 kbps Video Call VVT _05_2001_c1 ©2001, Cisco Systems, Inc. All rights reserved

Video Data Rate + 20% = Bandwidth Required 128kbps = 153kbps 384kbps = 460kbps 512kbps = 614kbps 768kbps = 921kbps 1.5Mbps = 1.8Mbps Video Voice Data Routing etc. Video Data Rate BW Required Provisioning < 33% of Link Capacity < 75% of Link Capacity Link Capacity Recommendations VVT _05_2001_c1 ©2001, Cisco Systems, Inc. All rights reserved

Quality of Service - Approaches Big Pipes QoS Both

QoS – How We Do It ACLs (access control lists) –to identify traffic and set IP precedence. For video and/or voice precedence is set to 5. Service policies push traffic into: –Low latency queuing (Priority queue) –Reserve bandwidth for RAS –Data queues which use RED Caveat – hardware limitations – example: Cisco 25xx routers

QoS Bandwidth guarantees for a T1 (1.544 Mbps): 512 kb/s for video 128 kb/s for voice 64 kb/s for SNA Remainder for everything else

FIRE WALLS Used to block traffic by disabling ports that allow traffic to come in to a users intranet. Usual strategy –Incoming: Block everything coming in. Open ports only as necessary based on need. –Outgoing: Allow everything. H.323 Video requires the following ports to be open in both directions to allow for optimal two way videoconferencing. –1718, 1719, 1720

PROXYS Allows a user to be anonymous to the outside world. Acts as a filter for incoming traffic. Requires a proxy server on both sides of firewall for H.323 video

FIRE WALLS Tested and Certified –CISCO PIX V.6.2 Currently Being Tested –NetScreen –Checkpoint –Cisco IOS Firewall –Sonic Wall Firewalls that will not work with H.323 –Novell Border Manager

IP Video Gatekeeper Hierarchy Institutional Gatekeepers –2 levels of hierarchy Gatekeepers located on node routers IHETS Directory Gatekeeper National Gatekeeper International Gatekeeper

INDnet Dial Plan E[T]CCCZZZNNNNNNN E = Exit Zone Prefix. 1 (Optional) T = Technology Prefix (Optional) CCC = Country Code ZZZ = Area Code NNNNNNN = Seven digit E.164 number Based on North American Numbering Plan (NANP)

Dial Plan Dialing between all protocols supported 13 digit E.164 number required in order to register with IHETS core gatekeeper First three numbers must match a valid country code as defined by E.164 ITU-T standard. (Default will be 001 for all calls made in the US and its territories) Next three numbers must match a valid area code as defined by NANP Next seven digits can be either: a user defined number or a valid seven digit Direct Inward Dial (DID) number such as the phone number on their desk

Dial Plan Seven digit number on desk ensures uniqueness of 13 digit number within an area code Technology prefix required in order to dial off net to ISDN endpoint Automatically scales to national and international dial strings based on E.164 Allows for future migration to ENUM standard when implemented GDS Compliant

Codec Recommendations That a vendor have both a desktop (PC based) and a room system in their product line Support interoperability Ease of Support Financial considerations Based on IPVTF

Codec Recommendations Room Systems –Polycom Viewstation FX (Appliance Based) –VCON Media Connect 8000 (PC Based) Desktop Systems (PC Based) –Polycom ViaVideo –VCON ViGO Based on IPVTF

DIRECTORY SERVICES Click To Meet TM Connects Point-to-Point any protocol –IP – ATM, IP – ISDN, ATM - ISDN Creates multipoint conferences on the fly Can schedule Point-to-Point or multipoint conferences in the future Sends out s notifying end users of upcoming meetings Can program all calls to go through a gateway or bridge

DIRECTORY SERVICES Click To Meet TM Continuous presence built in Will handle streaming media Supports firewall NAT/proxy/VPN transversal Connects to a gatekeeper CTM Premier V 3.17 uses Microsofts Active Directory for user accounts –LDAP support provides the capability to support connectivity to external, 3 rd party data stores like Novells eDirectory, Sun ONE Directory Server (formerly iPlanet LDAP Server) and Netscapes Directory Server

Dialing Made Simple Courtesy First Virtual Communications, Inc.

Scheduling Made Simple Courtesy First Virtual Communications, Inc.

REGISTRATION AND CERTIFICATION deo/ctm/index.htmlhttp:// deo/ctm/index.html Allows QoS to be enabled on the edge and core routers Provides data for directory entry Verified by Point-to-Point and multipoint test calls For more information on IP Video and the Certification process go to /ipvc/ipvideo_home.jsp /ipvc/ipvideo_home.jsp

How To Reach Us Ed Stockey Assistant Director, Product Research and Development