Some IP PBX models include additional interfaces. Below is an overview of these interfaces and their typical use cases.

USB:
Although IP PBX systems can store call recordings on internal storage, this is generally not recommended due to limited capacity. A USB port can be used to connect external storage devices such as a USB flash drive or USB SSD, providing a more reliable and scalable option for call recording storage.

SD Card Slot:
Similar to USB storage, an SD card slot allows you to store call recordings externally. By inserting an SD card into the IP PBX, you can expand storage capacity and avoid overloading the system’s internal memory.

Console Port:
Some IP PBX models include a console port for troubleshooting and system access. This port is typically used for low-level configuration or recovery and may be available as a USB Type-A or Mini USB interface.