1. VoisTel

2. What is it VoIP Private Branch Exchange perfect for small medium business environments Full PBX functionality and services Built-in ISDN-PRI(E1), ISDN-BRI, GSM, UMTS or analog interfaces Complete solution with Topex SIP Phones

3. Features IP SIP-based IP-PBX Interfaces: - VOIP ( LAN, WAN ) - 2 ISDN-PRI or 4 ISDN-BRI interfaces - 4 GSM/UMTS interfaces Up to 120 registered SIP clients Fax over IP - T38 ( udptl ) and pass-trough(G711 A and U) Mobility extension feature

4. Benefits Simple deployment of IP Telephony All-in-one IP-PBX, E1 and GSM gateway, Fax and Unified Messaging Server Small investment - fast savings Powerful Least Cost Routing No need for extra gateways

5. Applications Voice migration from TDM Voice services added to the data network Voice migration from TDM to IP Migration from hybrid TDM - VoIP to complete VoIP solution

6. Voice migration from TDM to VoIP PBX PSTN Voice Network LAN IP Network All IP - Voice and data network TOPEX VoisTel

7. Voice services added to the data network LAN IP Network Data Network TOPEX VoisTel

8. Fixed Operator solution Application: Voice migration from TDM to IP ●Actual voice solution IP Network BRI / PRI PBX PSTN PBX BRI / PRI Site A Site B

9. LAN TOPEX SIP Phones TOPEX Softphone TOPEX VoisTel WAN VoIP Service Provider GSM / UMTS 4 BRI / 2 PRI PSTN LAN Company Headquarter Remote Branch VoIP Migration solution

10. Alternative Operators Application: Migration from hybrid TDM - VoIP to complete VoIP solution Present scenario: hybrid PBX infrastructure containing: ●Analog phones ●IP phones ●VoIP interconnection ●BRI / PRI connection to PSTN / ISDN ●FX0 to GSM / UMTS fixed cellular terminal for the connection to the mobile networks Purpose: complete VoIP infrastructure with all available connections to fix, mobile or IP network BRI / PRI Hybrid PBX GSM / UMTS FCT Analog phones IP phones SIP / H.323 PSTN IP Network

11. Alternative Operators ●All in one VoIP solution with integrated GSM, ISDN BRI, ISDN PRI and IP interfaces ●Complete solution with TOPEX SIP Phones including TOPEX Soft Phone LAN TOPEX SIP Phones TOPEX Softphone TOPEX VoisTel IP Network SIP / H323 VoIP Service Provider GSM / UMTS Mobility Extension Feature 4 BRI / 2 PRI PSTN

12. sales@topex.ro www.topex.ro Thank you!