Whilst other modems may be used, they must contain an identical U.S.Robotics, or a 3Com chipset. Using an external modems is highly recommended.The instructions given in this document are based on using a Sportster 33.6 external modem.
This document describes the remote configuration procedures of the "BoXiT", using the VUP (Voicemail Utility Program) software, and external modems.
Figure-1. Remote Configuration Diagram
The remote configuration procedure includes the following steps:
- Configuring and connecting the modems.
- Establishing Communication between modems.
- "BoXiT" remote configuration using the VUP (Voicemail Utility Program) software.
- Disconnection.
The following paragraphs describe the above steps in detail.
1.1 Modem Configuration
Before connecting the modems (to the "BoXiT" unit in the remote system, and to the PC of the local system), several commands must be set in the modem. This procedure is performed using the "Hyper Terminal" application.
Type the modem commands in either upper, or lower case. Do not combine cases. Use the Backspace key to delete errors (an original AT command cannot be deleted since it is stored in the modem buffer). Ensure an "OK" reply by the computer after each carriage return (Enter button).
For modem setup, type the following commands:
ATZ3
ATY0
AT&H0&R1&I0&K1&D0&S0&U6&N6&B1
AT&W0
Additional Information:
If a command has numeric options, and none are included, then zero value is assumed.
For example, if the string ATB is typed, the command ATB0 is assumed.
Every command except A/, and +++ , must begin with the AT prefix and be confirmed by pressing ENTER.
The maximum command length is 58 characters. The AT prefix, carriage return, and space, are not counted as characters.
The following table includes the list of modem commands and their description.
Note: These commands must be entered in the order of their appearance, and in both remote, and local modems.
Table 1. Modem Commands
|
No. |
Command |
Description |
|
1 |
ATZ3 |
Resets the modem to factory default settings. Profile 0. |
|
2 |
ATY0 |
Sets power-on/reset to default configuration setting: profile 0 in NVRAM. |
|
3 |
AT&H0 |
Disables Transmit Data (TD) flow control. |
|
4 |
AT&R1 |
Ignores Receive Data (RD) hardware flow control. |
|
5 |
AT&I0 |
Disables Receive Data (RD) hardware flow control. |
|
6 |
AT&K1 |
Disables data compression. |
|
7 |
AT&D0 |
Overrides Data Terminal Ready (DTR) operations. |
|
8 |
AT&S0 |
Overrides Data Set Ready (DSR) operations. |
|
9 |
AT&U6 |
Sets floor connection speed to 9600 bps. |
|
10 |
AT&N6 |
Sets ceiling connection speed to 9600 bps. |
|
11 |
AT&B1 |
Manages the modems serial port rate. |
|
12 |
AT&W0 |
Modify the current configuration to NVRAM 0 template (Y0). |
1.1.1 Modem DIP Switches Configuration
Note: If a DIP switch is on, it is down. If a DIP switch is off, it is up (see Figure-2).
DIP switches which control a modem function, override related modem commands written to the modem (i.e. AD0 cannot be written to NVRAM if DIP 1 switch is up).
Table 2. DIP Switches Configuration
|
Switch |
Setting |
Function |
|
1 |
ON |
Data Terminal Ready (DTR) override. OFF Normal DTR operations: computer must provide DTR signal for the modem to accept commands. Dropping DTR terminates a call. ON Modem ignores DTR (override). |
|
2 |
OFF |
Verbal/Numeric Result Codes. OFF Verbal (word) results. |
|
3 |
ON |
Result Code Display. OFF Suppresses result codes. |
|
4 |
OFF |
Command Mode Local Echo Suppression. OFF Displays keyboard commands. |
|
5 |
OFF |
Auto-Answer Suppression. OFF Modem answers on first ring, or higher, if specified in NVRAM. ON Disables Auto-Answer. |
|
6 |
OFF |
Carrier Detect (CD) Override. OFF Modem sends CD signal when it connects with another modem, drops CD upon disconnection. ON CD always ON (Override). |
|
7 |
ON |
Power-on and ATZ Reset Software Defaults. OFF Loads Y or Y1 configuration from user-defined non-volatile memory (NVRAM).
ON Loads &F0 - Generic template from read-only-memory (ROM). |
|
8 |
ON |
AT Command Set Recognition. OFF Disables command recognition (Dumb Mode). ON Enables recognition (Smart Mode). |
Figure-2. DIP Switches Settings
1.2 Establishing Communication
Establishing the communication between the local and remote systems, is performed using the "Hyper Terminal" application.
The following section includes instructions and actual screen-shots





1.3 VoiceMail Utility Program

1.4 Disconnection
To end communication, switch the modem off. The modem is now configured.