installing tes824

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Hi, i have a tes824 and t7730.i have some problem in installing this system, i want to use this system with one CO line and 4 Internal phone:\r\n1-when line ringing from outside all phone will be ringing together!!!
2-i want to disable CO2 and CO3 but i couldn't.
3-how can i transfer the line to fax(jack04) when nobody is in office?
4- i get usb driver for connecting tes824 to pc but when i try to install it , pc hanging during copy file teakxusb.dll to system32 folder, i get the files from two different site but both of them not working?
Could you please help me in these case as soon as possible?

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