Black Box MD1641A, MD1640A manual Dial Phone Number Provided CRN Command

SERIES II INTELLIGENT DATA/FAX MODEMS

Dial Phone Number Provided (CRN) Command

The CRN command permits the dialing of the phone number immedi- ately following it (from the command line). It is similar to the D com- mand of the AT command set, except that the number is first checked against the Delayed Number and Forbidden Number list. If permitted, depending on the country regulations in effect, the number will then be dialed. For example, if you enter CRN7859875 and hit RETURN, your modem will check the two lists. If the number is on the Delayed Numbers list, you can dial that number again after t minutes have passed. If the number is on the Forbidden list, a CFIFC message will be displayed.

You can use various commands from the AT command set within the CRN command line to facilitate the dialing process, such as P, T, or : for pulse dialing, tone dialing and wait for dial tone. V.25bis supports “smart” dialing.

To dial a phone number, enter CRNdd...dd where dd...dd is the phone number, which can be up to 20 characters long using any character on the telephone pad (0 through 9, *, #, P, T, and :).

Some additional dialing characters may be available, based on country regulations.

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