1. MX25: Multifunction SIP Gateway Zultys Technologies

2. MX25: Multifunction SIP Gateway2 Overview of Mode 1 of Operation SIP Gateway –connect SIP network to PSTN –connect analog devices to SIP network –connect telephony systems to SIP network –connect telephony systems over WAN

3. MX25: Multifunction SIP Gateway3 Overview of Mode 2 of Operation Extender for MX250 services –facilitates full MX250 functions at branch office –local PSTN connectivity to MX250 at branch –remote site survivability operation when WAN fails

4. MX25: Multifunction SIP Gateway4 Telephony Interfaces PSTN cards available –8 analog FXO –8 analog FXS –1 T1 (ISDN or CAS) –1 E1 (ISDN) –4 ISDN BRI (S/T) Any combination to 30 channels –three interface slots

5. MX25: Multifunction SIP Gateway5 Mode 1: SIP Gateway, example 1a Connect SIP network to PSTN

6. MX25: Multifunction SIP Gateway6 Mode 1: SIP Gateway, example 1b Connect additional PSTN to MX250

7. MX25: Multifunction SIP Gateway7 Mode 1: SIP Gateway, example 2a Connect SIP network to analog devices

8. MX25: Multifunction SIP Gateway8 Mode 1: SIP Gateway, example 2b Add analog devices to MX250

9. MX25: Multifunction SIP Gateway9 Mode 1: SIP Gateway, example 3 Connect SIP network to PSTN and analog phones

10. MX25: Multifunction SIP Gateway10 Mode 1: SIP Gateway, example 4 Connect telephony systems to SIP Network

11. MX25: Multifunction SIP Gateway11 Mode 1: SIP Gateway, example 5 Connect telephony systems over WAN

12. MX25: Multifunction SIP Gateway12 Mode 2: Configuration of MX25 Fully provisioned from Admin UI of MX250 –PSTN interfaces, users, devices –included in dial plan –software upgrades Does not require IT skills at branch office View operation and status from main office Permits toll bypass without additional provisioning

13. MX25: Multifunction SIP Gateway13 Mode 2: MX250 Extender, example 1 Extend MX250 services for 25 users at branch office

14. MX25: Multifunction SIP Gateway14 Mode 2: MX250 Extender, example 2 Local PSTN access for MX250 at branch office

15. MX25: Multifunction SIP Gateway15 Mode 2: Communication failure to MX250 Remote survivability for MX250 users at branch office

16. MX25: Multifunction SIP Gateway16 Mode 2: Communication failure to MX250 Call routing example without WAN

17. MX25: Multifunction SIP Gateway17 MX25 is more than just a SIP gateway Modular telephony access –PSTN access to T1, E1, ISDN S/T, or analog FXO –PSTN combined with analog devices (FXS) Extend MX250 services to branch office –over LAN or WAN –over Internet through VPN Remote site survivability when WAN fails –continued operation in mode 2 –internal dial plan