PN 88300150
4/3/01
90
Dial Phone Number Stored in Memory (CRS) Command
A telephone number that you have stored in the modem’s memory may be automatically dialed after
checking it against the Delayed and Forbidden number lists by entering CRSmm where mm = 01, 02, 03,
04,....20. For example, a number stored in mm location 15 is entered CRS15 and hitting ENTER, then, if
the number in mm memory location 15 is not on either list, it is automatically dialed.
Store a Phone Number in Memory (PRN) Command
Your modem has a special V.25bis memory for storing phone numbers which you may dial by using the
CRS command. The memory holds up to 20 numbers of 20 characters each. You can store phone
numbers in this memory with the PRN command. The format for the command is PRNmm;dd...dd where
mm is the memory location at which you wish to store a number (any digits 01 through 20) followed by a
semicolon(;) and then dd...dd (the number to be stored up to 20 digits long). The number can include
punctuation as required.
To clear a number from the V.25bis memory, see the CLA command.
Listing Numbers Stored in Memory (RLN) Command
Telephone numbers that you have stored in the modem’s V.25bis memory may be listed and displayed
with the RLN command. It displays all twenty mm storage location numbers and associated telephone
numbers with any command letters and punctuation imbedded in each number. The RLN command is
similar to the L command of the AT command set. To list the V.25bis stored telephone numbers, type
RLN and hit ENTER.
Listing Delayed Phone Numbers (RLD) Command
When a phone number is dialed either by a CRN or CRS command and a connection is not made, the
number is entered in the modem’s V.25bis Delayed Number list along with the number of retry attempts.
Any further dialing attempts is delayed some amount of time (determined by the regulations of each
country). While the delay is in progress, the modem gives a DLC indication. The list contains eight
numbers. When filled, the next number failing “bumps” off the oldest number on the list onto the
Forbidden Number list. Numbers on the Delayed Number list that succeed in a connect attempt are
removed. If a certain number of failed attempts occur (the number of failed attempts is specified by each
country), the number is entered into the V.25bis Forbidden Phone Number List. Forbidden phone
numbers cannot be dialed at all. To list the phone numbers on the V.25bis Delayed Phone Number List,
type RLD and hit ENTER.
Listing Forbidden Phone Number (RLF) Command
Those phone numbers that have failed to connect the required number of times as specified by country
regulations are removed from the Delayed Number list and entered onto the V.25bis Forbidden Number
list. Numbers on the Forbidden Number list cannot be dialed at all for some maximum amount of time,
which is also specified by country regulations. In some countries, the time might be one hour, and in
others the number may never be dialed again. The forbidden list is eight numbers long, with the newest
number replacing the oldest if the memory is full. To list the numbers in the Forbidden list type RLF and
hit ENTER.
Disregard or Connect to Incoming Calls (DIC or CIC) Command
The Disregard or Connect to Incoming Calls commands are used for Auto-Answer operations. Depending
on the country regulations, your modem waits some amount of time or number of rings before answering
the call. During that time, you can stop the modem from answering the call by entering the DIC (Disregard
Incoming Calls) command. The CIC (Connect to Incoming Calls) command causes your modem to
answer the call (either reversing the effect of a DIC command or simply have your modem answer the call
immediately without waiting the regulation time before answering).
DTR Dialing ($D) Command
DTR Dialing is an alternate method of causing the modem to automatically dial a number. Data Terminal
Ready (DTR) is a signal that comes into the modem from the terminal or computer to which it is