Letron 500 Product Series: SOHO/Enterprise SIP iPBX

1. Letron 500 SIP IP-PBX For SMB and SOHO All in one System FXO/FXS & SIP trunk/line

2. Concept C o n c e p t

3. System Architecture Analog Trunk FXO Analog Line FXS SIP Trunk SIP Line Internal bus Internet LAN ITSP Fixed SIP Extensions Mobile SIP Extension WIFI SIP Extension Letron 500 SIP Trunks CO Analog Trunks Analog Extensions IP PBX Letron 500

4. SIP IP PBX Analog Line Analog Trunk Analog Trunk Analog Trunk Analog Trunks Analog Line Analog Line Analog Lines SIP Line SIP Line SIP Trunk SIP Trunk SIP Line SIP Trunk SIP Trunks Unified dialing plan over entire network Internet LAN/Internet Soft Phone GSM-WIFI Phone IP Phone Gateway PSTN SIP ITSP PSTN PSTN PSTN SIP ITSP SIP ITSP SIP ITSP SIP Lines SIP extensions increase the mobility Multiple SIP trunks registering to different SIP ITPS, shared by users Extend extensions to remote branch offices located worldwide. Distributed analog trunks shared by every office globally SH HK TPE Beijing LA Sydney

5. Letron 500 Architecture Internet LAN ITSP Fixed SIP Extensions WIFI SIP Extension Mobile SIP Extension SIP Trunks Letron 500 MOSA 4604C FXO CO Analog Extensions MOSA 4602B FXS Analog Trunks MOSA 4600C SIP Trunk MOSA 4600B SIP Line

6. Applications Applications

7. Multi-Office Application Internet ITSP ITSP FXO FXS SIP Trunk SIP Line Internal bus Letron 500 LAN LAN CO FXO FXS SIP Trunk SIP Line Internal bus Letron 500 CO LAN FXO FXS SIP Trunk SIP Line Internal bus Letron 500 CO

8. Integrate with Legacy PBX Legacy PBX Headquarter Regional Sales Office Internet ITSP LAN Traveling Sales LAN FXO FXS SIP Trunk SIP Line Internal bus Letron 500 CO

9. Mobile Office Application Analog Trunk FXO Analog Line FXS SIP Trunk SIP Line Internal bus Internet LAN ITSP Fixed SIP Extensions Mobile SIP Extension WIFI SIP Extension CO Analog Trunks Analog Extensions Letron 500 1 2 3 4 Greeting Dial my extension number No answer GSM No connection No connection

10. Wireless Mobile Office FXO FXS SIP Trunk SIP Line Internal bus Letron 500 Internet Office Suppliers Traveling x400 x104 CO ITSP x101 x102 x103 x100 AP

11. Applications for Home Users FXO FXS SIP Trunk SIP Line Internal bus Letron 500 Internet Home Room 1 Room 2 Friends Traveling Relatives CO ITSP

13. ASD Devices Internet FXO FXS SIP Trunk SIP Line Internal bus Letron 500 LAN FXO FXS SIP Trunk SIP Line Internal bus Letron 500 FXO FXS SIP Trunk SIP Line Internal bus Letron 500 LAN LAN ASD Devices CO CO CO

15. System Configuration 0/16 0/16 0/8 0/8 0/8 0/8 0/8 SIP Trunk 72 24/72 16 Letron 516 72 16/72 8 Letron 508 36 8/36 3 1 Letron 504D 36 8/36 0 4 Letron 504C 36 8/36 4 0 Letron 504B 36 8/36 2 2 Letron 504A 47 4/36 2 1 Letron 503 Concurrent Calls SIP Line Analog Line (FXS) Analog Trunk (FXO) Models

19. Soft-Keypad Make POTS phones and SIP Phones to be operated as feature phones FXO FXS SIP Trunk SIP Line Internal bus Letron 500

20. Market Segment M a r k e t S e g m e n t

23. Price Performance Low High Medium Low High Price Function Avaya 3Com Alcatel Nortel Cisco M Other Vendors ShoreTel Talkswitch NEC Panasonic Letron

24. Market Segment F u t u r e P l a n

25. Ayava Mobile Office

26. Mobile Line Analog Trunk FXO Analog Line FXS SIP Trunk Internal bus LAN Internet CO Analog Trunks Analog Extensions Letron 500 T1/E1 x223 Dial 223 x324 x325 Dial ##325# and hang up SIP Line GSM Mobile Line PSTN

27. Video Solution Analog Trunk FXO Analog Line FXS SIP Trunk Internal bus LAN CO Analog Trunks Analog Extensions Letron 500 Video Phone Server Internet x500 x501 SIP Line

28. End Customer 錢櫃企業股份有限公司 蘇寧電器 東京 - 上海 中華汽車 匯豐汽車 順益汽車 中國黃金集團 微星科技 聯華電子 新光集團 永豊餘集團

29. SIP Gateway IP PBX E1/T1 Digital Gateway Enterprise Gateway ASD Server SMB/SOHO Gateway VODNET Service MOS A Thank You