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

Overview

F-1

Call Request Commands

F-1

Call Request with Number Provided (CRN)

F-1

Call Request with Stored Memory Address Provided (CRS)

F-2

Call Response

F-2

Call Failure Indication (CFI)

F-2

Call Connecting (CNX)

F-2

Call Answer Commands

F-2

Incoming Call (INC)

F-2

Disregard Incoming Call (DIC)

F-2

Connect Incoming Call (CIC)

F-3

Program Normal (PRN)

F-3

Request List of Stored Numbers (RLN)

F-3

List Stored Number Response (LSN)

F-3

Command Response

F-3

Valid (VAL)

F-3

Invalid (INV)

F-3

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 3800 Series modems support 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 3800 Series modems issue a response to the DTE which indicates if the call failed or connected, or if the command is valid or invalid.

The following section discusses those V.25bis commands supported by the 3800 Series modems and the response to those commands. Tables F-1 and F-2 in the Command Response section list the V.25bis command and response and the analogous AT command.

NOTE

The 3800 Series modem must be configured for V.25bis dialing. Refer to DTE Dialer Type configuration option in Chapter 9, Configure Branch.

Call Request Commands

Call Request commands are issued from the DTE to the modem and are responsible for initiating any dial calls. Call Request commands include Call Request with Number Provided (CRN) and Call Request with Stored Memory Address Provided (CRS).

Call Request with Number Provided (CRN)

The CRN command dials the telephone number entered from the DTE. CRN is similar to the ATD command.

The CRN command format is:

CRNn

Where: n is the dial string. The following characters are permitted:

T

DTMF Dialing

P

Pulse Dialing

0–9

DTMF Tones or Pulse

 

Dialed Digits

*# A B C D DTMF Tones

R

Reverse Dial

:

Wait for Dial Tone

3810-A2-GB30-30

September 1998

F-1

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Paradyne 3800 ITU-T V.25bis Dialing Commands F and Response, Call Request Commands, Call Request with Number Provided CRN

3800 specifications

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