Erco & Gener GenPro 20e

Questions and Answers

H
Holly WagnerAug 1, 2025
How to fix Erco & Gener GenPro 20e Modem returning nothing or random characters?
- T
  Terri BrownAug 1, 2025
  If your Erco & Gener modem returns nothing or random characters, first, ensure that the terminal configuration on your PC corresponds to the modem's settings: Speed = 9600 bps, Data bits = 8, Parity = none, Stop bits = 1, Flow control = hardware. Second, check for any conflicting applications using the same port and close them. Finally, verify that the modem echo is deactivated and without message reporting by entering the command ATE1Q0 followed by AT&W if a backup is required.
J
James LewisAug 6, 2025
How to fix Erco & Gener Modem RS232 communication problem that returns nothing?
- C
  Cindy BrownAug 6, 2025
  If your Erco & Gener modem's RS232 communication returns nothing, ensure it's correctly powered with an external regulated power source (5.5V to 32V DC). Also, verify the serial cable connection at both the PC and the modem. Finally, ensure the serial cable is correctly wired according to the specifications in chapter 3.2.1.3 15-pin Sub HD female connector.
C
Charles HatfieldAug 10, 2025
What to do if Erco & Gener GenPro 20e shows ERROR message with correct syntax but incorrect parameters?
- C
  Christine CamposAug 10, 2025
  If your Erco & Gener modem displays an ERROR message indicating correct AT command syntax but incorrect parameters, enter the command AT+CMEE=1 to receive an error message with its specific error code instead of just 'ERROR'. Then, re-enter the problematic AT command to obtain the error code, which will be in the form: +CME ERROR : , or +CMS ERROR : . It is also strongly recommended to systematically allow the modem to return error codes by entering the command AT+CMEE=1.
C
Catherine BellAug 14, 2025
What to do if Erco & Gener Modem shows NO CARRIER message when attempting a DATA call because the selected modulation type is not supported by the network?
- N
  Nicole GarciaAug 14, 2025
  If your Erco & Gener modem displays a 'NO CARRIER' message during a DATA call because the selected modulation type isn't supported by the network, ensure that the chosen modulation type is compatible with the network. If it is not, select a compatible modulation type using the command AT+CBST=0,0,1 (1*).
D
David JuarezAug 18, 2025
What to do if Erco & Gener Modem COM port is not directed to the GenPro?
- J
  Jose HatfieldAug 18, 2025
  If you receive an ERROR message indicating that the COM port is not directed to the GenPro but to another modem, enter the command **_ATI._**. A correct response should be **_WAVECOM MODEM.... All other responses indicate a dialog with_** another modem. Verify the COM port used in the communications application.
E
Erin BergerAug 23, 2025
What to do if Erco & Gener GenPro 20e shows NO CARRIER message when attempting a DATA call because the selected modulation type is not supported by the called number?
- C
  Carla BarnettAug 23, 2025
  If your Erco & Gener modem shows a 'NO CARRIER' message when attempting a DATA call, it might be because the selected modulation type isn't supported by the called number. Ensure that the selected modulation type is supported by the called number.
C
Cheryl JohnsonAug 27, 2025
What to do if Erco & Gener GenPro 20e shows ERROR message because of incorrect AT command syntax?
- B
  Benjamin JimenezAug 27, 2025
  If your Erco & Gener modem displays an ERROR message due to incorrect AT command syntax, re-enter the command.

Summary

Presentation

Warning

Copyright and Disclaimer

References

Product Differences

Compares features between GenPro 20e and GenPro 24e models.

Reference Documents

Lists other relevant documents for the GenPro modem.

Abbreviations

Glossary of technical abbreviations used in the manual.

Packing

Lists the items included in the GenPro package.

Packing Case

Details the external dimensions and labels of the packing case.

Modem Labels

Describes the labels attached to the underside of the modem.

General Presentation

Physical Description

Describes the physical appearance and connectors of the GenPro modem.

External Connections

Details the different external connectors and interfaces of the modem.

15-pin Sub HD Connector

Describes the 15-pin Sub HD connector and its pin assignments.

Cables

Describes the different types of cables supplied with the modem.

Characteristics And Services

Available Options and Accessories

Lists optional features and accessories available for the GenPro modem.

Using The Modem

Starting with the Modem

Guide on how to start and install the GenPro modem.

Communication with the Modem

Instructions for establishing communication via RS232 and using AT commands.

Re-initialisation of the Modem

Explains how to reset the modem using the hardware RESET signal.

Vehicle Usage Recommendations

Provides guidance on safely connecting and using the modem in vehicles.

GSM Indicator LED

Explains the different states indicated by the modem's GSM LED.

AT Commands Echo Deactivated

Instructions for managing AT command echo behavior for communication.

GSM Signal Quality Verification

How to check the GSM signal strength and bit error rate using AT commands.

PIN Code Verification

Steps to verify the SIM card PIN code status.

GSM Network Registration Verification

Procedure to check if the modem is registered on the GSM network.

Main AT Commands

Overview of essential AT commands for modem control.

Powering Down the Unit

Correct procedure for powering off the GenPro modem.

Updating Modem Software

Guide to upgrading the modem's firmware and software.

Trouble Shooting

RS232 Communication Problems

Solutions for issues with RS232 serial communication.

NO CARRIER Message

Troubleshooting steps for the 'NO CARRIER' response during calls.

Functional Description

Architecture

Overview of the GenPro modem's internal architecture and modules.

Power Supply

Details the power requirements and voltage range for the modem.

Protection

Describes internal and external protection mechanisms for the modem.

RS232 Serial Link

Explains the RS232 interface, signals, and protection features.

Auto-baud Mode

Describes the modem's automatic baud rate detection feature.

Pins Description

Details the pin assignments for the Sub HD connector.

General Purpose Inputs;Output

Explains the functionality of general purpose inputs and outputs.

Reset Functionality

General Reset Information

Explains the hardware RESET signal and its usage.

RESET Sequence

Details the procedure to activate the emergency hardware RESET sequence.

Audio Features

WatchDog Functionality

Describes the hardware watchdog for monitoring software activity.

Audio Interface

Overview of the audio interface for connecting handsets.

Loud-speaker

Details the loud-speaker output characteristics and gain adjustment.

Buzzer Output

Describes the optional buzzer output and its control command.

Technical Characteristics

Mechanical Specifications

Provides dimensions, weight, case material, and ingress protection.

Electrical Specifications

Details voltage range, power consumption, and effects of voltage deviations.

Audio Interface Characteristics

Specifies characteristics of the microphone and loud-speaker connections.

Buzzer Option Characteristics

Details the specifications for the optional buzzer output.

SIM Interface

Describes the SIM card interface characteristics.

General Purpose Inputs;Output

Details the characteristics of the general purpose inputs.

General Purpose Output

Describes the characteristics of the open-collector output.

RESET Signal Electrical Characteristics

Specifies the electrical properties of the RESET signal.

GSM;DCS Frequency Bands

Lists the frequency ranges for GSM 900 and DCS 1800 bands.

RF Performances

Details receiver and transmitter RF performance specifications.

External GSM Antenna

Specifies characteristics for external GSM antennas.

Environmental Characteristics

Lists operating temperature, storage, and humidity limits.

Standards and Conformities

Outlines product compliance with R&TTE, automotive, and EMC standards.

Protections

Power Supply Protection

Details protection against power supply issues including fuses.

Over-voltage Protection

Describes protection against voltages exceeding +32 VDC.

ESD Protection

Explains the modem's resistance to Electrostatic Discharge.

Miscellaneous Protections

Covers EMI/RFI filtering and signal smoothing.

Security Recommendations

General Security Advice

Important safety guidelines for using radio operator equipment.

Vehicle Security

Safety recommendations for using the modem while driving a vehicle.

Care and Maintenance

Guidelines for preserving the product's condition and lifespan.

Your Responsibility

User responsibilities regarding modem care, security, and functions.

Recommended Accessories

Client Support

Declaration of Conformity