# T25 generates random Bellbutton key presses **URL:** \ **Category:** Door Station - Discussion\ **Created:** [October 26, 2025, 6:56pm UTC](https://community.mobotix.com/t/t25-generates-random-bellbutton-key-presses/10032 "2025-10-26T18:56:11Z")\ **Posts on this page:** 1\ **Showing post:** 15
**Author:** ![Mx-JoergS](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.mobotix.com/mx-joergs/32/10425_2.png) [@Mx-JoergS](https://community.mobotix.com/u/Mx-JoergS)\ **Post date:** [November 3, 2025, 7:45am UTC](https://community.mobotix.com/t/t25-generates-random-bellbutton-key-presses/10032/15 "2025-11-03T07:45:37Z")
Hello Baggins, This is a new behavior or at least the cleaning of the connectors was not solve the issue: losing the MxBus connection is problematic. For stable and reliable communication, a functioning MxBus connection is essential. Your last option is to update the system. Hopefully, this is a software-related issue caused by your outdated firmware and Bus Module version. If the problem persists after the update—and assuming the PoE power supply is stable—it is likely a hardware issue with either the BellRFID module or the camera. In your case, the system is currently unstable and not functioning properly. You have nothing to lose by updating. **Please make sure to back up the camera configuration and the BellRFID module before proceeding!** > This assumes that no other MxBus modules (e.g., DoorMaster, RS232 IO Box) are connected to the system. **Workaround: Using the Doorbell Button on the Camera** As a temporary workaround, you can use the doorbell button on the camera as you suggested. You’ll find a detailed description of all available options here: [insert link or reference]. > [@The Bell Behavior and Video Mailbox Menu](https://community.mobotix.com/t/the-bell-behavior-and-video-mailbox-menu/2217): > > The Bell Behavior and Video Mailbox page allows you to configure the behavior of the Door Station when the bell buttons are pressed or when contact numbers are dialed. More specifically you have the possibility to: • Define which remote devices are involved in the signaling phases • Specify the sequence with which the remote devices will be called • Enable/disable announcements and answering machine • Assign the users the rights to playback the voice messages • Specify which sounds should b… --- _[View the full topic](https://community.mobotix.com/t/t25-generates-random-bellbutton-key-presses/10032)._