To take full advantage of L1 Multicast Line, it's recommended for users to use L1 switch on users side as well. (However, to use L2 or L3 switch is also available.)
Since JPX edge SW(L1SW) does not support LFS (Link Fault Signal function), user needs to select model/device that can connect to non LFS supported device.
For details, please refer to [Appendix 2. Examples of Connection Configuration] in "arrownet Guideline for Co-Location L1 Multicast Line".

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-[Co-Location]arrownet Guidelines for Co-Location L1 Multicast Line