Paradyne 3821PLUS manual ITU-T V.25bis Dialing Commands F and Responses, Overview

ITU-T V.25bis Dialing Commands F and Responses

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-1Call Request Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-2Call Request with Number Provided (CRN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-2Call Request with Stored Memory Address Provided (CRS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-2Call Response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-2Call Failure Indication (CFI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-2Delayed Call Indication (DLC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-2Call Connecting (CNX) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-3Call Answer Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-3Incoming Call (INC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-3Disregard Incoming Call (DIC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-3Connect Incoming Call (CIC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-3Program Normal (PRN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-3Request List of Stored Numbers (RLN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-3List Stored Number Response (LSN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-3Command Response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-4Valid (VAL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-4Invalid (INV) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-4

Overview

ITU-T V.25bis is an international dialing protocol that permits direct and stored number dialing using DTEs in either Asynchronous, Bisynchronous, or HDLC operating mode. The 3821Plus modem supports V.25bis request and answer commands that initiate and cancel dialing, program commands that allow you to create and enter telephone numbers to memory, and list commands that display all telephone numbers stored in directory locations. As commands are entered from the DTE, the 3821Plus modem issues a response to the DTE which indicates if the call failed or connected, or if the command is valid or invalid.

The following sections discuss those V.25bis commands supported by the 3821Plus modem, and the responses to those commands. Tables F-1and F-2in Command Response list the V.25bis command and response and the analogous AT command.

NOTE

The 3821Plus modem must be configured for V.25bis dialing. Refer to the &Mn or &Qn commands in Chapter 4.

•The character format for Asynchronous Dialing mode is 7 data bits, even parity, and 1 stop bit.

•The character format for Bisynchronous Dialing mode is 7 data bits, odd parity, and 1 stop bit.

•The character format for HDLC Dialing mode can be 8 data bits, no parity, and 1 stop bit; 7 data bits, odd parity, and 1 stop bit; or 7 data bits, even parity, and 1 stop bit.

Character format is determined by the DTE. The modem detects this format when an AT prefix is entered from the DTE.

3821-A2-GB20-40 January 1999 F-1