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Western Telematic SRM-100 User Manual

Page 23

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5. Local Echo: Enables / disables the local echo for the SRM’s internal modem.

(Default = Off).

6. Rings to Answer: Determines how many rings will elapse before the SRM’s internal

modem answers an incoming call. Note that if the SRM is reinitialized, the modem will

return to the setting selected by SetUp Switch 5. (Default Determined by SetUp Switch

5, Factory Setting = 1).

7. Quiet Mode: Enables / Disables the Quiet Mode. When enabled, the SRM’s internal

modem will not send confirmation messages in response to AT commands.

(Default = On).

8. Result Codes: Determines whether the SRM will respond to AT commands with Terse

(numeric / abbreviated) or Verbose (English text) messages. For a listing of possible AT

result codes, please refer to Section 11. Note that if the Quiet Mode (see item 7) is

enabled, the SRM will not send responses to AT commands, regardless of which Result

Code setting is selected. (Default = Verbose).

9. Speaker: Enables/disables the modem speaker. (Default = On).
10. Error Control: Enables / Disables the error control function. (Default = On).
11. Compression: Enables / Disables the data compression function. (Default = On).
12. Reset String: If necessary, this item can be used to redefine the Modem Reset String.

(Up to 16 characters, Default = ATZ).

13. Custom Initialization String: This item is used to “customize” the SRM’s modem

initialization string. During configuration, the unit will build an initialization string

based on items selected from the Modem Parameters Menu. This string will consist of

three components; (1) The default string header (AT&C1&D2), (2) the responses to items

1 through 11 in the Modem Parameters Menu, and (3) any special AT commands entered

via item 13. For a listing of available AT commands, please refer to Section 9.

(Up to 16 characters, Default = undefined).

14. Hang-Up String: This item is used to define tasks that are performed after the SRM

hangs up at the end of a communication session. Typically, the Hang-Up string would be

used to clear memory, or reset the modem to a set of user-defined parameters. To define

the Hang-Up String, simply key in the appropriate AT commands for the desired

operation(s). For a listing of available AT commands, please refer to Section 9.

(Up to 16 characters, Default = undefined).

When you have finished selecting modem configuration parameters, press [Esc] to return to the

main Help Screen. User-selected parameters will be saved in the SRM’s non-volatile memory.

5.4. Save Parameters

After the unit has been completely configured, it is recommended to save configuration

parameters to an ASCII file as described in Section 8. This allows quick recovery in the event

that the unit is reset to default parameters, or configuration is accidentally deleted or altered.

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SRM-100 - Secure Rack Modem, User's Guide

Set-Up and Configuration