Contents:

Connecting to your ISP

Using the AT Command Set

Upgrading your Modem

Modes of Operation

Dialing, Answering, and Hanging Up

Working with Memory

Controlling Result Code Displays

Controlling EIA-232 Signaling

Accessing and Configuring the Courier 56K Corporate Modem Remotely

Controlling Data Rates

Dial Security

Flow Control

Handshaking, Error Control, Data Compression, and Throughput

Displaying Querying and Help Screens

Testing the Connection

Dedicated/Lease Line and Synchronous Applications

Troubleshooting

Appendixes

S-Registers

Alphabetic Command Summary

Flow Control Template

Result Code Meanings and Sets

Technical Information

V.25 bis Reference

ASCII Chart

Fax Information for Programmers

Viewing LEDs

Regulatory Information

Glossary

Courier 56K Corporate Modem Command Reference

V.25 bis Reference

The commands and result codes described in this section are sent and recognized by your V.25 bis communications software. You are not expected to send them to the modem the way you do with AT commands.

 

Commands

CIC Connect incoming call Instructs the Courier 56K Corporate modem to answer an incoming call.
CRN Call request using number provided Instructs the Courier 56K Corporate modem to dial the number following this command. Example: CRN18005551234
CRS Call Request with memory location Instructs the Courier 56K Corporate modem to dial a number stored in memory. Example: CRS3
DIC Disregard incoming call Instructs the Courier 56K Corporate modem to disregard an incoming call and to override auto answer for this call.
PRNn Program number Stores a number in NVRAM. Example: PRN3; 18005551234
RFN Request list of forbidden numbers Instructs the Courier 56K Corporate modem to list the numbers with which the Courier 56K Corporate modem is unable to connect.
RLN Request list of stored numbers Instructs the Courier 56K Corporate modem to list the numbers previously stored in NVRAM.



Dial Options

0-9 Digits
& Flash
: Wait for dial tone
> (Greater Than) separator
< Pause
= (Equal Sign) separator
P Pulse
T Tone
. (Period) separator
- (Minus) separator

 

 

Result Codes

These are the normal (X0) result codes. For a complete list of result codes, refer to the Result Code Meanings and Sets chapter of the Appendixes section.

CFI Call Failed
CFRT Ringing
CNX Connect
INC Incoming call
INV Invalid action
LS List of numbers
LSF List of forbidden numbers
LSN List of stored numbers
VAL Valid

 

These are the extended result codes (X1) that replace CFI and INV.

CFAB Call aborted
CFCB Local Courier 56K Corporate modem busy
CFET Remote device busy
CFFC Forbidden call
CFNS Number not stored
CFNT Answer tone not detected
INVCU Command unknown
INVMS Message syntax error
INVPS Parameter syntax error
INVPV Parameter value error

 

 

Commands and Result Codes Not Supported

CRI Call request with identification number
PRI Program identifier
RLD List of delayed call numbers
RLI Request list of identification numbers