ERROR_CTX_MODEM_RESPONSE_ERROR - 7011 (0x1B63)
The modem did not accept the command sent to it. Verify that the configured modem name matches the attached modem.
Updated: Feb 21, 2026
Technical Meaning
The ERROR_CTX_MODEM_RESPONSE_ERROR error code, with the numeric value 7011 and hexadecimal representation 0x1B63, indicates that a command sent to a modem was not accepted. This typically suggests an issue with the communication between the software or system and the modem.
Error Details
This error is specific to modem-related operations within the Windows environment. It occurs when a command intended for a modem fails to be recognized or processed by the modem itself. Common scenarios include incorrect configuration of the modem name, issues with the modem driver, or problems in the communication protocol between the software and the modem.
Usage Context
This error is most commonly encountered during operations that require interaction with a modem, such as sending DTMF tones, initiating calls, or configuring modem settings. It can also appear when attempting to establish a connection through a modem for data transmission purposes.
Developer Interpretation
Developers should interpret this error code as an indication that the command sent to the modem was not recognized or processed correctly. This could be due to several factors, including incorrect configuration of the modem name in the software settings, issues with the modem driver, or problems in the communication protocol.
Common Causes
- Incorrectly configured modem name in software settings
- Issues with the modem driver
- Problems in the communication protocol between the software and the modem
Related Errors
ERROR_CTX_WIN2K_NOTINITED(0x800705B9)ERROR_CTX_CANT_INIT(0x800706A4)ERROR_CTX_WIN2K_IN_USE(0x800705BA)
FAQ
Q: What does the error code 7011 mean?
A: The modem did not accept the command sent to it. Verify that the configured modem name matches the attached modem.
Q: How can I resolve this issue?
A: Ensure that the modem name in your software settings is correctly configured and matches the attached modem. Check for any issues with the modem driver or communication protocol between the software and the modem.
Summary
The ERROR_CTX_MODEM_RESPONSE_ERROR error code (7011) indicates a failure to accept a command sent to a modem. This can be due to incorrect configuration, issues with the modem driver, or problems in the communication protocol. Developers should verify the modem name and ensure proper configuration and functioning of the modem.