. How to enable NT4.0 to support your modem

. How to enable NT4.0 to support your modem

---- Currently, more and more people use Windows NT4.0 as the LAN Operating System and connect to the INTERNET through a Modem. Although most people use a Modem that is recognized or compatible with Windows NT4.0, however, some Modem types are not recognized by Windows NT4.0. This article describes how to modify the Windows NT4.0 configuration file to support your Modem.

---- For Windows NT4.0 modem, Telephone Application Programming Interface (TAPI) is used. Different modems have different configuration files. For Windows NT 4.0 modem configuration files (. inf) is located in the % Systemroot % \ inf directory. Note that. inf is an implicit directory and the file name is MDMxxxx. INF, where xxxx varies with the modem. For example, the configuration file of the HAYES modem is MDMHAYES. INF.

---- Next we will modify the MDMHAYES. INF file to explain how to enable the Chinese version of Windows NT4.0 to support your modem. Back up the original MDMHAYES. INF file before modification.

---- The MDMHAYES. INF file also supports modem of many brands such as Hayes Hertz, but now we modify the "Hayes Compatible 9600" section of Hayes to support the Smartlink9614UM modem of "LianCheng.

---- The MDMHAYES. INF file contains the [M1702] section. The content is as follows:

---- [M1702]

---- Addreg = All, Common, M1702Reg, External

---- This section specifies the CIDR blocks in which Hayes Compatible 9600 (M1702) is set, for example, in the [ALL] [Common] [M1702Reg] and [EXTERNAL] sections. Hotspot Network

---- [ALL] section: the setting value in this section is used by ALL modem in MDMHAYES. INF.

---- [COMMON] section: the setting value of this section is used by all modem of this brand (HAYES.

---- [M1702REG] section: the setting value for this section is for the modem of "Hayes Compatible 9600.

---- [STRINGS] section: This section contains the STRINGS represented by each variable.

---- After the above introduction, we will begin to explain how to modify the above section of the MDMHAYES. INF file to change the original "Hayes Compatible 9600" to the "Smartlink9614UM" modem of LianCheng technology.

---- 1. Modify the [COMMON] Section

---- Modify the command and connection Response to conform to your modem requirements. (For the relevant commands, refer to your modem manual)

---- ① Modify COMMAND

---- The "Smartlink9614UM" modem uses the "\ Q3" Traffic Control Command to enable the hardware (RTS/CTS) and the "\ Q0" command to disable it ", open the software-based traffic control command "\ Q1" and modify it as follows:

HKR, Settings, FlowControl_Off, "& K0" ==>& K0 changed to \ Q0
HKR, Settings, FlowControl_Hard, "& K3" ==> & K3 changed to \ Q3
HKR, Settings, FlowControl_Soft, "& K4" ==> & K4 changed to \ Q1

---- ② Modify the Response part

---- Before modification, we must first understand the meaning of the values in Response. The following table is used as an example:

HKR, Response, "15 <cr>,
, 00, 00, 00; connect28800

---- The values are described as follows:

---- 15 <cr>: indicates the modem response code after the dial-up connection. The response code here is 15 <cr>.

---- 1: occupies a BYTE. Here, 1 indicates that the values of the following two groups of DWORD (, and,) are in hexadecimal notation. If the value is 0 or not given, it indicates that the two DWORD groups are strings.

---- 02: occupies a BYTE. Here, 2 indicates that the connection is successful "Connect ".

---- 00: occupies a BYTE, which is only useful when the previous BYTE is 01 (Negotiation Progress) or 02 (Connect. 00 indicates NO Error Control and NO Compression.

----,: Occupies a DWORD (four bytes) to indicate the speed of the DCE (between the modem and the modem. note that the values in this group are arranged in descending order. For example, the values of and 00 in this example are high bytes, while those of 80 and 70 are low. Therefore, this value indicates:

00007080 = 7*4096 + 8*16 = 28800bps

----,: Occupies a DWORD (four bytes), used to represent the speed of DTE (between RTE and modem), this group of values is also in reverse order.

---- When modifying the Response part, please include all the Response data supported by your modem (you can do not enter an impossible Response, such as connecting at a speed of BPS) enter the format as described above.

---- 2. Modify the [M1702REG] region hotspot Network

---- If the AT command (for example, "AT & FE0V0 & C1 & D2S0 = 0") of the START (INIT) modem does not match your modem, or you want to add the start command here, modify it. For "Smartlink9614UM", you do not need to modify it here.

---- After the above modification, your Windows NT4.0 will be able to support your Modem, which is also applicable to Windows 95.