SIP 407 Proxy Authentication Required
The 407 Proxy Authentication Required error occurs when a proxy server between the SIP client and the telephony server cannot authenticate the request. As a result, the request cannot be processed.
Common Causes of 407 Proxy Authentication Required
- Incorrect SIP credentials
- Misconfigured proxy server settings
- Missing authentication parameters
- Errors in server configuration, logs, or scripts
How to Fix 407 Proxy Authentication Required
- Check SIP account settings for typos
- Verify proxy server configuration
- Review server logs for authentication errors
- Ensure proper authentication credentials are provided
- Contact your system administrator for assistance
The SIP 407 error is related to proxy authentication issues and may require deeper server-side troubleshooting. Checking settings and logs is essential for resolving it.