Connect to the maintenance port on Webex Boards
In the event that something unanticipated has occurred and you are unable to make contact with your Webex Board through the network, you can make use of the maintenance port. In most cases, you should not utilize the maintenance port unless you are in communication with a TAC engineer or administrator from Cisco Support.
If you connect a computer directly to the maintenance port on the Board, you will have access to certain boot-related information, as well as logs and the Board’s application programming interface (API). All of these can be helpful for diagnosing and fixing a problem.
The Board versions come with a variety of maintenance ports, each of which has its own unique set of capabilities and demeanor.
Board 55S, 70S, 85S, Board Pro
A micro-USB maintenance port is included on each of these boards. Through this interface, it is possible to establish a connection not only to the main CPU but also to the camera CPU.
1. Start by linking a computer’s USB port to the micro-USB connector on the board using a USB cable.
You will see two devices that connect through USB to the serial port. The names change according to the operating system that the PC is using. /dev/ttyUSB0 is commonly used for the camera in Linux, while /dev/ttyUSB1 is used for the main device.
These ports are linked to the built-in universal asynchronous receiver/transmitter (UART) on both of the CPUs. They display any and all information that is produced by the system to this port, including logs generated by bootloaders.
The number of bits per second (bps) is 115200.
2. When you are prompted to sign in once the boot process has been completed, enter your credentials as an administrator. You cannot sign in to the camera CPU; this is only possible on the main CPU. After logging in, you will have access to the board’s application programming interface (API).
If your board has been reset to factory settings, the sign-in information is admin, and the password is left blank.
Board 55 and 70
These circuit boards come equipped with a USB-A connection that provides some capabilities for board maintenance. These boards do not come equipped with a serial connection to the primary CPU. On top of USB, you are just provided with a virtual serial interface. This indicates that until the board is nearly fully functional, your computer will not be able to see it even if it is present.
1. Attach a USB cable coming from your computer to the board’s USB-A port using the cable.
Use the USB port that is located closest to the panel on Webex Board 55.
2. Turn on the power to the board.
You will now be able to view the virtual serial port on the personal computer. The name of this feature is determined by the computer’s operating system. When using Linux, you will most often encounter /dev/ttyACM0.
The number of bits per second (bps) is 115200.
If you turn on the board before connecting it to the computer, the computer will be unable to detect the board’s presence.
3. When prompted, enter your credentials as an administrator into the sign-in box. After logging in, you will have access to the board’s application programming interface (API).
If your board has been reset to factory settings, the sign-in information is admin, and the password is left blank.