VOICE OVER INTERNET PROTOCOL

1. VOICE OVER INTERNET PROTOCOL VoIP

2. 1 • What is VOIP? • VOIP is the technology that allows you to make a voice call over any IP link (NOT ONLY THE INTERNET) • How does it work? • A voice call is sent as data through an IP link and then decoded back from data to voice to complete the call ROUTER DATA TO VOICE DATA IP LINK VOICE TO DATA ROUTER VOICE TO DATA DATA TO VOICE

3. DATA IP LINK ROUTER ROUTER Company ABC HQ to Company ABC branch office DATA IP LINK ROUTER NOC You can phone any destination in the world 2 • There are two types of VOIP calls • 1.On net call(the traditional way.) • A call from one router to another router on the same network. • 2.Off net call(the new way) • A call made from one router to the National Operations Center (NOC). The NOC acts as a router for everyone who doesn’t have a VOIP router

4. SA Fixed ( Local / National) NOC PABX GSM (all Cell calls) ROUTER International DATA IP LINK INTERNET Per second billing only when connection is made with termination point Call carried free of charge up to the NOC 3 3 • How will I save MONEY? • In Feb 2005 the telecommunications Act deregulated state owned monopoly of SA’s only telecommunications supplier (Telkom) thus opening the door for opportunities to put in place alternative ways to make phone calls at a more affordable rate. • VOIPsavings are achieved as follows: • Cheaper minute rates because off bulk purchase. • Billing per second (a saving of up to 30% to 70%). • Cheaper way of carrying the call (Broadband /Internet).

5. 4 • What do YOU need to start saving with VOIP • Router (Multipath Switch) • Broadband connection to the Internet (ADSL / Diginet) • ISP (Internet Service Provider) • Please note VOIPwill not replace your existing • Telkom lines (PSTN). • It is simply a more • affordable way • of phoning!

6. 5 • The system still depends on two factors to work: • Broadband Connection • ISP • This is why MESystemsrecommend that your PSTN stays in • place (companies telephone numbers will not • change). Should it happen that the VOIP • system (ADSL/ISP) fails, it will automatically • fail over to the existing system, thus ensuring • that you will never be worse of than before • installing your VOIP. • VOIPwill integrate seamlessly with your • current PABX System. Even if you do not have a • PABX you can still enjoy the benefits ofVOIP. • MESystemswill sculpt a unique solution for each • and every customer according to their • specific needs.

7. Trunk Port Extension Port 1 2 3 4 5 6 Office PABX Extensions Telkom PSTN Telkom Line Extension Port Trunk Port 1 2 3 4 5 6 Office PABX Extensions Telkom VOIP Channels ADSL TO WWW PSTN Telkom Line VOIP MPS ASM 400 6 • Current Situation • 6 Concurrent calls possible • After VOIP Installation Telkom lines go straight into trunk ports inside the PABX

8. 7 • 2 Telkom lines still go into the Trunk Port on the PABX • 4 Telkom lines goes into the FXO side of the VOIP(MPS) and out the FXS side of the VOIP (MPS) to the trunk port of the PABX. • TheVOIPchannels are shared with one or more PSTN lines (in this case all four) this ensures that according to the LCR programming on the PABX,thecheapestpath (VOIP) is selected to make a specific call. • In the case of VOIPnot being available (due to ADSL / ISP failure) you will still be able to place the call through the normal PSTN lines. • Note that not all the VOIPchannels needs to be shared with the PSTN line.

9. Extension Port Trunk Port 1 2 3 4 5 6 7 8 Office PABX Extensions Telkom Requirement: 2 open trunks on PABX VOIP Channels PSTN Telkom Line ADSL TO WWW VOIP MPS ASM 400 8 • 8 Concurrent calls possible • MESystemsbelieves that every client is unique and that we can sculpt a • solution that’s tailor-made for them, so join the countless number of • companies already benefiting from VOIP. • In conclusion we leave you with the words of Cathy Martine senior • vice President of AT&T • “IT IS NOT A QUESTION OF IF VOIP WILL • BECOME THE NEW STANDARD IN VOICE TRANSMISSION BUT WHEN”