1. Why Converged Networks Make Sense: VoIP a First Step July 26, 2006

2. Ken Babcock, VP of Consulting Services, Advanced Technologies and Services, Inc Glen MacArthur, VP of Converged Networks, Convergence Engineers Approximate Length: 45 Minutes Hosts

3. Overview -Brief Overview of ATS -What is a converged network? -Why do converged networks make sense? -Three network architecture models -Legacy Network -IP Network -Converged Network -Issues facing network managers -Audience Expectations

4. ATS Overview Founded in 1995 Based in Wayne, NJ Several tools have become gold standard in Revenue Assurance in telecom industry Corporate switch-testing standard at largest LECs in USA Named to the Inc. 500 list in 2001 Since 1995 has saved phone companies over $1,000,000,000 Announced partnership with Convergence Engineers to spearhead work in the IP-based networks of tomorrow

5. Converged Network ATA SOFTSWITCH MEDIA GATEWAY (MG) TRUNKING GATEWAY (TG) SIGNALING GATEWAY INTERNET / INTRANET IP NETWORKS PARTY “A” - CALLING CALL CONTROL SIGNALING TRANSLATES & SELECTS ROUTE TO ACCESS TANDEM ACCESS TANDEM STP TDM SS7 SIGNALING CALL TRAVERSES PSTN REAL TIME BEARER PATH PACKET STREAM TDM IXC SWITCH ACCESS TANDEM LEC SWITCH TDM PARTY “B” - CALLED MEDIA GATEWAY (MG) TRUNKING GATEWAY (TG) TDM STP

6. Terminology AT – ACCESS TANDEM ATA – ANALOG TELEPHONE ADAPTER (AKA – IAD) CA – CALL AGENT (AKA – CALL CONTROL ELEMENT, MGC, SOFTSWITCH) CALEA – COMMUNICATIONS ASSISTANCE FOR LAW ENFORCEMENT ACT (1994) EO – END OFFICE IMS – INTERNET PROTOCOL (IP) MULTIMEDIA SERVICES IXC – INTEREXCHANGE CARRIER LEC – LOCAL EXCHANGE CARRIER MG(C) – MEDIA GATEWAY (CONTROLLER) POI – POINT OF INETRCONNECT SSW – SOFTSWITCH (AKA – CALL AGENT, CALL CONTROL ELEMENT, MGC) STP – SIGNAL TRANSFER POINT (SS7) TG - TRUNKING GATEWAY

7. Why Converged Networks? “Hot” Applications –Custom Calling and CLASS Features –Instant Messaging and Email –Presence –ITunes –Ring Tones –IPTV –Video on Demand Expected Benefits –Reduced Capital Expenditures –Reduced Operating Expenses –Protection for Current Network Infrastructure

8. LEC SWITCH ACCESS TANDEM LEC SWITCH IXC SWITCH STP TDM DIALS 2014429295 TRANSLATES & SELECTS ROUTE TO ACCESS TANDEM SS7 SIGNALINGCALL TRAVERSES PSTN STP TDM PARTY “A” - CALLINGPARTY “B” - CALLED PSTN Model - Legacy Network Architecture

9. DIALS 2018262676 ATA “LAST MILE” BROADBAND CONNECTIONS CALL CONTROL SIGNALING REAL TIME BEARER PATH PACKET STREAM INTERNET / INTRANET IP NETWORKS PARTY “A” - CALLINGPARTY “B” - CALLED SOFTSWITCH VoIP Architecture

10. Converged Network ATA SOFTSWITCH MEDIA GATEWAY (MG) TRUNKING GATEWAY (TG) SIGNALING GATEWAY INTERNET / INTRANET IP NETWORKS PARTY “A” - CALLING CALL CONTROL SIGNALING TRANSLATES & SELECTS ROUTE TO ACCESS TANDEM ACCESS TANDEM STP TDM SS7 SIGNALING CALL TRAVERSES PSTN REAL TIME BEARER PATH PACKET STREAM TDM IXC SWITCH ACCESS TANDEM LEC SWITCH TDM PARTY “B” - CALLED MEDIA GATEWAY (MG) TRUNKING GATEWAY (TG) TDM STP

11. Converged Network Transition Concerns Security issues Legacy voice market Reciprocal Compensation Access Charges IT resources Bandwidth

12. The Issues Facing Converged Network Managers Cost Recovery Regulatory Impact Existing network infrastructure investment Equipment and Vendor Interoperability

13. What’s Next? Review audience expectations Information for future webinars What else would you like to hear about?

14. Thank You Very Much! Questions?

15. Converged Network ATA SOFTSWITCH MEDIA GATEWAY (MG) TRUNKING GATEWAY (TG) SIGNALING GATEWAY INTERNET / INTRANET IP NETWORKS PARTY “A” - CALLING CALL CONTROL SIGNALING TRANSLATES & SELECTS ROUTE TO ACCESS TANDEM ACCESS TANDEM STP TDM SS7 SIGNALING CALL TRAVERSES PSTN REAL TIME BEARER PATH PACKET STREAM TDM IXC SWITCH ACCESS TANDEM LEC SWITCH TDM PARTY “B” - CALLED MEDIA GATEWAY (MG) TRUNKING GATEWAY (TG) TDM STP