Verilink ConnecT 56K DSU (896-502110-001) Product Manual - Manual (Page 29)

Configuration methods
ConnecT 56K DS User Manual 2-13
The remote password may or may not be required depending on the
present configuration of the remote unit. Responses to the CNR
commands are returned in the data format currently configured. Possible
responses include: VAL and INVAn.
Following is a list of switched 56 commands and their possible responses.
CRN Call Request with Number:
When the ConnecT 56K DSU is configured for switched 56 operation,
the CRN command causes the DSU to dial the supplied number. The
format of the command is:
CRN [NUMBER TO BE DIALED]
If no number is included in the command, the number stored in dial
register number 1 is dialed. If no number is provided and no number is
stored in dial register number 1, the ConnecT 56K DSU responds with the
call failure indication CFINS (Call Failure Indication Not Stored).
CRS Call Request using Stored number:
The CRS command causes the ConnecT 56K DSU to dial the number
stored in the specified register. The format of this command is:
CRS [OPTIONAL SPACE][REGISTER NUMBER 1-10]
If this command is issued without the register number parameter, the
INVPS (INValid Parameter Syntax) response is issued. If this command
is issued and the register parameter is not in the valid range for dialing
registers, the INVPV (INValid Parameter Value) response is returned.
Other responses include: VAL, CNX, CFIxx
DIC Disregard Incoming Call:
This command causes the V.25 bis processor to return to command mode
even if there is an incoming call pending. This allows the user to issue
local commands and ignore the incoming calls. There are no parameters
associated with this command. Possible responses include: VAL.
PRN Program Number:
This command stores the supplied number into the specified register. The
format of this command is:
PRN [REGISTER NUMBER];[NUMBER TO BE STORED]
Switched 56
operation