1． basical function
(1)． on-line IC card public telephone
with IC saving（4406、4436、5536、6636）、acount card、 agent card（4406、 4436、5536、6636、24C01）to phone native、 international 、local、mobile, and automatically charge
without IC card to call free number and special service number.
support200、300、IP telephone card ,and can also call native and international 、local and mobile number.
support receiver charging, called charging rate got from platform, update
redial, automatic remove after dial
language choose ,English or Chinese, remind interfere ,format of web page is displayed by searcher, can also be changed and download by platform.display present time date, and can be corrected by the platform.
during the call, the present time, how long it last, IC card balance
when finish, remind sound for taking out the card.
support download of installation information from platform、 index information .
terminal can identify unable IC card.
support all the charge rate download from platform (including multiple）, and according to charge display the present balance.
disorder alarm and report（ hand line broken、 telephone crust open、 card read-writing department disorder）, report to management system after reparation.

(2)．information service
support ADSL automatic dial and cut.
support the net-search based on HTML4.01.
support forward ,back, stop, up and down , left and right ,disconect (by rolling, pressing）.
support URL in web page moving, status display as download process
support charge according to the time ,charge rate from sonic platform , update period
support hand writing input, route display and word identification support one or more vector display.

(3)． video service
full screen on-line media video sending ,support formatWMV9,MPEG,MPG4.
support jump forward and back, break, play, volumn up and down, stop, information display（ by pressing）.

(4)．advertisement sending
when terminal is free, full screen advertisement sending, when used, stop the sending.
when speaking without information or video, then non-full screen advertisement sending, when finish or information and video is used the sending is cut.
the content of advertisement is from the named group sending server.
support off-line advertisement

(5)．maintenance
information, voice platform, ADSL dial setting.
Hard ware checking and communication test.
Voice platform setting, parameter data download.
off-line remind web page setting and download update.
interface related photo file setting and download, automatic update of software.

(6)． system communication
ST2000 system communication
Saving card process、 account card process、 hand dial process、 agent card dial process、 parameter setting and download process, charging list report process、 disorder report process、card management
NAU communication

IC card authentication process、 information fee report process FTP communication （hand or automatic） offline advertisement、 off interface、 update of applied program、 file management、 file setting

2、 Specialty
(1).invest is not high, with the enhance of people's life, the need of the telephone function is not only traditional voice,information、 video will be important part of future public telephone service.
(2)satisfy customers' huge need, realize the purpose of travel around the word with one phone.
(3).on-line intensive management、 easy to maintain、 convenient to build the net. The working status is statistic and checked by system-management-center, make the maintenance and management much cheaper.
(4).because perfect AAA（authorization、attestation、accord）function and net safety fuction,make it possible for the customer to make any finance deal on the terminal.