ERROR_CTX_MODEM_RESPONSE_VOICE - 7016 (0x1B68)
Voice detected at remote site on callback.
Updated: Feb 21, 2026
Technical Meaning
The error code ERROR_CTX_MODEM_RESPONSE_VOICE with the numeric value 7016 and hexadecimal representation 0x1B68 is returned by certain Windows API functions when a modem callback indicates that voice has been detected at the remote site.
Error Details
This error typically occurs in scenarios where a modem is configured to perform callback operations. When such an operation is initiated, if the modem detects voice activity on the line after the call has been established, this error code may be returned by the API function that handles the callback response.
Usage Context
The context in which this error might appear involves scenarios where a modem is set up to make or receive callbacks. For example, when initiating a callback to another party and detecting voice activity, the modem driver or application might return this error code as part of its response handling mechanism.
Developer Interpretation
Developers should interpret this error code as an indication that the modem has detected voice on the line during a callback operation. This can be useful for applications that need to handle different types of modem responses, such as distinguishing between data and voice communications.
Common Causes
- Incorrect configuration of the modem or its settings related to callback operations.
- Voice activity being detected at an unexpected time during a call.
- Issues with the modem hardware or driver software.
Related Errors
ERROR_CTX_MODEM_RESPONSE_BUSY(7015, 0x1B67): Indicates that the modem is busy and cannot respond to the callback.ERROR_CTX_MODEM_RESPONSE_NO_CARRIER(7014, 0x1B66): Indicates no carrier signal detected.
FAQ
Q: What does this error mean?
A: This error indicates that voice has been detected at the remote site during a modem callback operation.
Q: How can I handle this error in my application?
A: You should check for this error code and handle it appropriately, such as by logging the event or taking specific actions based on the nature of the callback response.
Summary
The ERROR_CTX_MODEM_RESPONSE_VOICE error is a specific return code used by Windows API functions to indicate that voice has been detected during a modem callback operation. Developers should be aware of this error and handle it as part of their application's modem communication logic.