1. Issued by Iskratel; All rights reserved OBR70121a ISKRATEL Cost-effective solution for NGN Ludvik Uhan Marketing Manager

2. Issued by Iskratel; All rights reserved Trends and Market Requirements Trends Migration from TDM-based PSTN to packet-based NGN is inevitable! Reasons to evolve: Ability to introduce new services, multimedia applications Relatively high DSL access penetration Lower cost of ownership: unified networks instead of separate networks IP is becoming the universal protocol used to provision most new services Economic Analysis of PSTN Migration to NGN indicates a Pay-Back of 2-3 years after the deployment is complete and an impressive reduction of OpEx

3. Issued by Iskratel; All rights reserved Trends and Market Requirements Operator Expectations Revenues Increase of revenues from new, differentiated services on group/subscriber level CapEx Gradual investment / reuse of existing equipment OpEx Decrease operating expanses – simple network & service management & maintenance Scalability Providing cost-effective solutions in all customer segments Reliability Services and users need reliable always-on networks Future orientation Legacy services availability in NGN, NGN is unavoidable

4. Issued by Iskratel; All rights reserved Trends and Market Requirements Universal Access Management TDM Switch NG Switch The Answer to Expectations Connected Enterprise Connected Home

5. Issued by Iskratel; All rights reserved Applications Metro / Urban Network PSTN MSAN Managed IP Network SI2000 NG IP/Packet Network Universal Access Layer MSAN

6. Issued by Iskratel; All rights reserved Applications Connected Enterprise - Hosted Services Managed IP Network MGW SSN7 SI2000 SN SAN TDM Connection Point SSN7, V5.2 Contact Center, Telephone Book… Application Servers Head-End SI2000 CS SI2000 MS V5.2 MSAN SAN SI2000 CS,MS I P C o n n e c t i o n P o i n t

7. Issued by Iskratel; All rights reserved Applications SI2000 CS SI2000 MS PBX MSAN DSS1 (BRI/PRI) xDSL DSS1 (BRI) DSS1 (PRI) Managed IP Network MGW SI2000 SN SSN7 V5.2 IP-PBX H.323 V5.2 Connected Enterprise - PBX Connectivity MSAN

8. Issued by Iskratel; All rights reserved Applications Connected Enterprise - Corporate Networks TA IP- Phone Soft- Phone IP- Phone Central Application Servers Analog Large Exchange Site 1 CS Local APPS IP- Phone IP- Phone TA Analog Soft- Phone MGW Small Exchange Site 1 TA IP- Phone Soft- Phone Tele- Worker SoftPhone Remote Office Site 4 Remote Office Site 3 ISDNAnalog MSAN ISDNAnalog MSAN MS CS MS Managed IP Network PSTN

9. Issued by Iskratel; All rights reserved Applications Connected Home Managed IP Network MGW SI2000 SN SSN7, V5.2 SI2000 CS SI2000 MS V5.2 Head-End: Multimedia, Applications MSAN Omni Box TV Omni Box

10. Issued by Iskratel; All rights reserved Trends and Market Requirements PBX Connectivity NGN – the Synonym for new Revenues MGW SI2000 SN SSN7, V5.2 CS MS Multimedia & Applications: VoD, Gaming, Contact Center, Unified Messaging, Central Phone Books,... SI2000 Voice Video Data Managed IP Network Telephony IP Centrex IVR Automatic Call Agents Remote Agents and Contact Centre Services TV over IP Video on Demand Games on Demand Applications on Demand Video Surveillance Video on Mail Home Automation

11. Issued by Iskratel; All rights reserved Step by Step towards Next Generation Network V5.2 DSS1 (PRI) Voice SN PBX TV AN DSS1 (BRI) / xDSL Analog, ISDN / xDSL Step by Step towards NGN... End Customers’ needs: Broadband access to packet networks New telephony services Personalized content... Service Provider’s needs: New profitable services Cost effective transport for voice, data and video Additional capacitates on existing cable infrastructure ???

12. Issued by Iskratel; All rights reserved Step by Step towards Next Generation Network... V5.2 DSS1 (PRI) Multimedia Head-End Packet IP Network Voice SN MM Services PBX TV MSAN DSS1 (BRI) / xDSL Analog, ISDN / xDSL... adding broadband access Data, Video

13. Issued by Iskratel; All rights reserved Step by Step towards Next Generation Network...... single, IP access network for new locations V5.2 DSS1 (PRI) Multimedia Head-End Packet IP Network Voice SN PBX MGW Voice SSN7 Voice Services MM Services PBX Data, Video, Voice TV MSAN DSS1 BRI / xDSL Analog, ISDN /xDSL DSS1 (BRI) / xDSL Analog, ISDN / xDSL CS MSAN

14. Issued by Iskratel; All rights reserved Step by Step towards Next Generation Network...... IP connectivity and services forenterprises V5.2 DSS1 (PRI) Multimedia Head-End Packet IP Network Voice SN PBX MGW Voice SSN7 Voice Services MM Services PBX Voice, Data, Video DSS1 (PRI) MSAN Centrex TV MSAN DSS1 BRI / xDSL Analog, ISDN /xDSL DSS1 (BRI) / xDSL Analog, ISDN / xDSL CS MSAN PBX Data, Video, Voice

15. Issued by Iskratel; All rights reserved Step by Step towards Next Generation Network...... full interoperability between Pure IP & IP enabled architecture V5.2 DSS1 (PRI) Multimedia Head-End Packet IP Network Voice SN PBX MGW Voice SSN7 Voice Services MM Services PBX Voice, Data, Video DSS1 (PRI) MSAN Centrex TV MSAN DSS1 BRI / xDSL Analog, ISDN /xDSL DSS1 (BRI) / xDSL Analog, ISDN / xDSL CS MSAN PBX 3 rd party switch Data, Video, Voice

16. Issued by Iskratel; All rights reserved Main Components E1 V5.2 STM-1 E1-IMA ATM H.323, H.248, IUA/SCTP 100BT, 1000BT The Key is in the Universal Access Multi Service Access Node ZS0S0 Uk 0 S 2M A Analog, CAS ISDN 10/100BT H.323 ADSL SHDSL MSAN

17. Issued by Iskratel; All rights reserved Main Components The Brain of IP Network and the Bridge to TDM E1 SSN7 CS 1000BT SIP, H.323, H.248, IUA/SCTP SIP-T, SIGTRAN MGW H.323, H.248, SIGTRAN 100BT

18. Issued by Iskratel; All rights reserved Highly Economical Evolution of PSTN Maximal utilization of existing infrastructure and know-how: cable, billing systems, switching systems, terminal equipment,... Operator’s and end-user’s knowledge... Expansion based on uniform IP network with lower CapEx & OpEx Introducing new revenue sources: Video/Games/Applications on demand,... IP Centrex, Contact Center,... Interoperability between NGN and TDM network/systems Key guidelines for successful evolution of PSTN: