Whether the FIU and SC1 boards can be configured at one site and the SFIU and SC1 boards can be configured at the other site when an optical supervisory channel exists between the two sites

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No. The SFIU board must be used with the ST2 board. The SFIU board combines bidirectional optical supervisory signals of the ST2 board and transmits the signals in a single fiber, avoiding commissioning and compensation for IEEE 1588v2 signals.

Other related questions:
Whether the CRPC board can amplify the optical power of the SC1/SC2 board
The CRPC board cannot amplify the optical power of the SC1 or SC2 board.

DAS1 boards cannot be configured at an OLA site
1. A built-in FIU is configured on the DAS1 board and an extra FIU board must also be configured for the OLA site. The configuration is asymmetric. 2. The DAS1 board has only one variant (OAU101), and therefore cannot meet the flexible configuration requirements of OLA sites.

Participants at the TE30 site cannot hear the speaking site, while other sites can hear. Why?
Participants at the TE30 site cannot hear the speaking site, while other sites can hear. Cause: A self-loop or loopback test is being performed at the local site. Troubleshooting: Stop all self-loop or loopback tests.

Two optical port rates of SC1 and SC2 boards on OSN 6800
Question: How to understand the optical port rates 16.896 Mbit/s and 4.096 Mbit/s of SC1 and SC2 boards described in OSN 6800 product documentation? Root cause: None Answer: 1. Optical ports on SC1 and SC2 boards on OSN 6800 support two rate modes. In the networking containing OSN 6800, the rate 16.896 Mbit/s is used in the case of interconnection with the SC2 or SC1 board, and the rate 4.096 Mbit/s is used in case of the interconnection with an optical supervisory control (OSC) board on BWS 1600G. 2. The rate mode does not need to be set and is determined by the board. It is auto-adaptive.

The TE30 cannot hear the chair site but other sites can hear the chair site
Possible cause: A loopback test is being performed at the local site. Troubleshooting: Stop all local and remote loopback tests.

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