Filter
Top Products
D. CCITT V.25 bis Dialing Commands and Response
D-33830-A2-GB91-30 August 1998
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
, or < User-Defined Pause
& Flash Hook
= or > Delimiters
Call Request with Stored Memory Address Provided (CRS)
The CRS command dials the telephone number stored in the request
directory location. CRS is similar to the ATDS command.
The CRS command format is:
CRSx
Where: x is directory location 1–10.
The modem responds to the command with either a VAL (valid) or
INV (invalid) response followed by a call progress report such as
connect (CNX) or failure (CFI).
Call Response
A Call Response indicates if the command was accepted by the
modem. Call Response includes Call Failure Indication (CFI) and Call
Connecting (CNX).