

| Hong Kong | |
| Address. Unit 9, 22/F, Kodak House II, 39 Healthy Street East, Quarry Bay, Hong Kong |
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| Tel. | +852 - 2362 1822 |
| Fax. | +852 - 2362 9947 |
| E-mail. marketing@esi-asia.com | |
| Shanghai |
| 16/F, Block J, Jiali Building, No. 2 Long, 1228 YanAn Road West, Shanghai, P.R.C. |
| Postal Code: 200052 |
| Tel. +86 - 21 6294 7998 |
| E-mail. marketing@esi-asia.com |
| Shenzhen |
| Room 1502, HuaRong Building, 178 MinTian Road, FuTian Area, Shenzhen City, P.R.C. |
| Postal Code: 518048 |
| Tel. +86 - 755 2598 1505 |
| E-mail. marketing@esi-asia.com |
ESI is a trust local partner to implement flexible and innovative applications for Enterprise and Carrier, we are not only provide open platform solutions, but also customize the applications to enable service providers to maintain the competitive edge in the fast – moving and dynamic telecommunication industry. We work with global technology leaders to bring our customers a superior collaborative experience in a world of extraordinary connectivity. By integrating the latest technology from global market such as Dialogic open technology, Avaya open standard base communication system, Audiocode VoIP technology and Video bridge to build the high-value system for today’s telecommunications and tomorrow’s converged communication network.
Our experienced Engineering team understands the importance of project management and quality control. Over the past few years, ESI has a good track records, ESI delivers quality output for any project awarded to ESI.
Our experienced Engineering team understands the importance of project management and quality control. Over the past few years, ESI has a good track records, ESI delivers quality output for any project awarded to ESI.
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