Owner`s manual

48
MT64DSU Owner's Manual
Synchronous Auto-Dial
The beginning of this chapter described the AT command set which
enables the MultiDSU64K to dial, hang-up, and be configured for
various applications. These commands, however, are only
functional when the DCE transmits asynchronous data. That is, the
AT command set cannot be used in synchronous environments.
CCITT V.25bis commands provide you with an alternate set of
commands and responses for synchronous applications. V.25bis
commands support dialing functions in synchronous mode according
to the recommendations of the CCITT (Consultative Committee of
International Telephony and Telegraphy); if you need to establish a
datacomm link over a Switched Telephone Network, and your
equipment outputs a synchronous data stream, V.25bis commands
are essential.
This section includes a description of the command format and a list
of V.25bis commands and responses.
List of Commands
Dial Phone Number Provided (CRN) Command
The
CRN
command permits the dialing of a phone number (from the
command line). It is similar to the
D
command of the AT command
set. To dial a phone number, enter
CRNdd...dd
where
dd...dd
is the
phone number, which can be up to 16 characters long using any
character on the telephone pad.
Store a Phone Number in Memory (PRN) Command
Your MultiDSU64K uses mnemonics for storing phone numbers
which you may dial by using the
CRS
command. The MultiDSU64K
memory holds up to 10 numbers, 16 characters per number. You
can store phone numbers in this memory with the
PRN
command.
The format for this command is
PRNnn;dd...dd
where
nn
is the
memory location for the stored number (any location 0 through 9)
followed by a semicolon(
;
) and then
dd...dd
(the stored number).
The number can include punctuation as required. To clear a number
from the V.25bis memory, see the
CLA
command.