Voice over IP Technologies

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1 Voice over IP Technologies

2 Voice Over IP Overview VoIP is an emerging technology that allows voice calls to be made over an IP network. Vendors have been pushing VoIP for a few years, but many potential customers have been waiting for better call quality, or believe that nothing is free. If applied and configured correctly, a VoIP solution can provide excellent call quality, and tremendous financial savings to both large and small organizations. The Key to implementing a successful VoIP solution is to Identify opportunities that fit.

3 Do Companies Want VoIP? Not very likely 16% Not at all likely 4% Unsure 4% Extremely likely 16% 76% Will! Likely 28% Very likely 32% Network World asked 500 readers to assess whether they would consider using voice over IP: Source: Network World 500/ Progressive Strategies 08/11/1998, p. 36

4 Key Business Drivers for LAN-Based Telephony and VoIP Improve Network Management 26% Support Multimedia 38% Better Utilization of Bandwidth 59% Save Money 81% Source: Survey by Yankee Group Survey, 10/98

5 Identifying VoIP Solutions Customer Specific Questions - Does the customer make long distance calls between offices? Does the customer have a large, at-home workforce? Has the customer already made an existing investment in WAN infrastructure which could be leveraged for a VoIP solution? Is the customer looking to set-up a call center? Is the customer looking to scale-down communications support costs? Project Specific Questions Is there enough bandwidth? (if no, how much more is needed?) Does customer already have required network infrastructure? What is the ROI on the VoIP project? VoIP is a simple concept to sell, but answer these questions before hand to determine if the application fits

6 How does VoIP Work? The 1-2-3s of VoIP 1. Compression voice is compressed typically with one of the following codecs, G k, G7.29AB 8k, G k 2. Encapsulation the digitized voice is wrapped in an IP packet 3. Routing the voice packet is routed thru the network to its final destination These steps happen in reverse at the other end

7 Types of VoIP Technologies 1. IP LAN Telephony or IP PBXs By design, an IP based telephone PBX system Telephones are IP handsets and codecs in one PBX chassis performs call routing and traditional telephony functions Voce travels over Ethernet computer LAN TOP Manufacturers include: Cisco and 3COM / NBX 2. VoIP Gateways Devices which allow the bridging of legacy PBX systems and/or analog telephones over IP networks. TOP Manufacturers include: Cisco, 3COM, and Ericsson

8 IP LAN Telephony or IP PBXs NBX Chassis NBX Call Processor (NCP) card NBX Business Telephone Full-featured Ethernet-based telephone NBX Analog or Digital Line Card NBX 10BASE-T Hub Card NBX Open Platform allows for the use of industry-standard network hubs & switches to connect additional telephone sets

9 IP PBX Architecture *NBX 100 is Independent of the Network File Server *NBX 100 System stays up even when the file server goes down. Network File Server Hub or switch, 10/100 CAT-5 Ethernet Can be Switched 10 Mbps

10 Sample Application SO / HO IP Router or ISDN, DSL LAN Modem HUB IP Network Main Office PBX Layer 2 Switch PSTN Router

11 Sample Application Small Office 1 NBX 100 PSTN Hub or Switch IP Router IP Network Small Office 2 NBX 100 Hub or Switch IP Router PSTN

12 VoIP Gateways Allows the bridging of IP and circuit switched telephony devices Primary Uses of VoIP Gateways Toll By-Pass, #1 Integration of heterogeneous PBX environments over WAN IP Gateway for Mobility Telecommuters, SOHO TOP Manufacturer VoIP Options Cisco, VoIP Card for 2600 series (and up) routers Manufacturer Specific Gateways, (Nortel, Lucent, Siemens, etc.) Ericsson WebSwitch (WebSwitch 100 and 2000) Ericsson offers most overall flexibility and customer value

13 How VoIP Works EXT 101 places a call to ext 201. PBX A sees ext 201 as the gateway and sends the call out to the GW. The GW compresses the voice and encapsulates it in an IP packet and sends it to the destination of the other GW. The GW on LAN B must strip out the IP, decompress the voice and route it to PBX B. EXT 101 EXT 201 IP Network GW router router GW PBX A PBX B LAN A LAN B

14 VoIP Application Allows Toll By-Pass via FR Network Local dial tone at remote office 3 digit extension dialing between offices FR Network Branch Office #1, FL PBX Digital Handsets Ericsson Webswitch 2000 Branch Office #2, TX Main Office, CA PBX PBX Digital Handsets Digital Handsets Frame Relay Connection

15 VoIP Application Telecommuter Toll By-Pass via Internet Analog phones appear as extensions on WS200 DSLCable connection WS 100 PC Analog Phone Analog FAX Webswitch 2000 Main Office, CA Internet Telecommuter PBX PC WS 100 Analog Phone Analog FAX Digital Handsets T1 Internet connection

16 Issues Associated with proper VoIP Implementation Assess current user requirements and future needs (video?) Assess corporate LAN / WAN infrastructure and determine required upgrades or modifications, if required Implement correct Quality of Service and data prioritization (latency problems) Modify security systems for VoIP (firewalls) Create and maintain master IP addressing to EXT schema Proactive monitoring of available network bandwidth and utilization rates

17 Converged Networking from Virtual Data Systems VDS has over 5 years of experience designing and implementing converged networks supporting voice, video and data services Only VDS can provide proven best of breed technologies: Cisco Premier Partner 3COM Voice Solutions Partner Ericsson-Webcom Solutions Partner Polycom Solutions Provider (IP video systems) VDS can provide turnkey solutions including: system design, specification, equipment supply, installation, configuration and user support services Local and available to help YOU make the SALE!

18 << Questions and Answers >>

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