USRobotics V.34 user manual CRN18001234, CRS3, PRN3

COURIER HIGH SPEED MODEMS

The Courier and the remote modem must use the same eight-bit data format. The character length must be 7 bits and either ODD or EVEN parity (ODD is preferred), or 8 bits and NO parity.

&M7 Use the High Level Data Link Control (HDLC), an ITU-T standard for synchronous communications. HDLC ignores parity.

V.25 bis Commands and Result Codes

Commands

∙CIC (Connect incoming call)

Instructs the modem to answer an incoming call.

∙CRN (Call request using number provided )

Instructs the modem to dial the number following this command.

Example:

CRN18001234

∙CRS (Call Request with memory location) Instructs the modem to dial a number stored in memory.

Example:

CRS3

∙DIC (Disregard incoming call)

Instructs the modem to disregard an incoming call⎯ overrides auto answer for this call.

∙PRNn (Program number) Stores a number in NVRAM.

Example:

PRN3; 18001234

∙RFN (Request list of forbidden numbers)

Instructs the modem to list the numbers with which the modem is unable to connect.

∙RLN (Request list of stored numbers)

Instructs the modem to list those numbers previously stored in NVRAM.

Synchronous Operations F-7