D-1Issue 1 November 1994      DChanging Modem-to-ModemConnection Data RatesYour modem is capable of communicating with other modems atdata rates of 300, 1200, 2400, 4800. 7200. 9600. 12000, or14400 bits per second (bps). When you place a call to anothermodem, the settings of two AT commands (B and N) and twoS-Registers (S37 and S109) are used to determine the data rateof that connection.S-Register S37 is used to set the maximum allowable data rate.S-Register S109 is used to select all the permitted data rates.The B command is used to select whether the modem isconfigured as a CCITT or BELL modem. The N command isused to select whether the modems may connect only at asingle data rate (N0), or whether the modems may connect at alower data rate (N1).When the N0 command is used, the modems can only connectif the answering modem supports the data rate specified inS-Register S37 of the originating modem (the one which placesthe call). If the answering modem cannot support the data ratespecified by the originating modem, no connection will be made.When the N1 command is used (the default setting from thefactory), the modems will first attempt to connect at the datarate specified by S37. but will fall back to a lower data rate ifrequired by the receiving modem.If you would like to know more about how the modem usesmodulations and data rates, refer to the information on the Band N commands and S-Registers S37 and S109 in Chapter 4.

Data Communications!

Supplied Equipment

Additional Equipment You Will Need

Procedures

G Fax Application Software

using your modem

using at commands

Dial Modifiers

Examples of Dial Command Strings

Data Mode and Online Command Mode

V Command

Reload Factory Settings Command (&F)

Reload Settings from a User Profile (&Y)

File Transfers

Fax Operation

troubleshooting

technical specifications

C Response Codes

Data Rates

error control

data compression

Modem-to-Computer Flow Control

Computer-to-Computer Flow Control

Modem-to-Modem Flow Control

Paradyne 3760 User Manual

KeepInTouch 3760

Issue

A Troubleshooting

Communications!

Required Equipment

Model 3760 and Model 3762 Installation Procedures

Model 3763 and Model 3764 Installation Procedures

KeepInTouch Card Modem

Command Mode Using the Escape Sequence

result codes

Direct Connection to a Cellular Telephone

Automatic Cellular Setup for Direct Connection on the Cellular Side

F5 Cellular Setup for RJ11 Adapter Connection on the Cellular Side

F6 Cellular Setup for Connection on the PSTN Side

Non-ETC Modems

Placing a Call Through a Modem Pool

KeepInTouch 3760-B2