JASDEC allows only a compatible device to connect, but TSE does not recommend any specific router or L3SW about other SP.
For further information about a compatible device of JASDEC, please see "arrownet version2.0 Guideline for NW Connection (JASDEC)".
[System Documents Site]
URL:
https://faqsd.jpx.co.jp/faq/show/17770?site_domain=en_system_documents-arrownet version2.0 Guideline for NW Connection (JASDEC)