JPX Service Desk
FAQ Site (Application FAQ / System Support FAQ)

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Contacts for JPX Service Desk

Application Procedure contact
Open Hours: Business day 9:00 am - 6:30 pm
TEL: +81-50-3819-1070
Email: servicedesk@jpx.co.jp
arrownet support contact
Open Hours:
  Japanese) 24/7
  English) 7:00 am - 6:30 pm on business days
TEL: +81-50-3819-1030
Email: arrownet_support@jpx.co.jp
arrowhead/ToSTNeT contact
Open Hours: Business day 7:00 am - 6:30 pm
TEL: +81-50-3822-8882
Email: arrowhead@jpx.co.jp
J-GATE contact
Open Hours:
  Japanese) 24/7
  English) 7:00 am - 6:30 pm on business days
TEL: +81-50-3822-8900
Email: j-gate3@jpx.co.jp
Clearing contact
Open Hours: Business day 9:00 am - 5:00 pm
TEL: +81-50-3819-1076
Email: servicedesk_clearing@jpx.co.jp
  • No : 140
  • Updated Date : 2022/05/30 09:00
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To reduce the risk of system failure, is it mandatory to have line redundant composition? Please tell us about each Service Provider (JPX, JASDEC and TFX).

To reduce the risk of system failure, is it mandatory to have line redundant composition? Please tell us about each Service Provider (JPX, JASDEC and TFX).
Category : 

Answer

[JPX]
In order to reduce the risks of AP failure, redundant configuration connecting to either AP2, AP3, or AP4 is recommended.
Multicast transmission is not redundant (not rerouted during system failure) as a network. Redundant configuration of receiving from both multicasts 1 and 2 (multiple single configuration via 2 lines) is recommended to secure reliability.
In case having only one line of single configuration, applicants need to understand the risks of choosing non-redundant configuration and write words saying "We shall take responsibility for any risks of not having redundant configuration by self-determination" as the special note on the application form of arrownet SP connection.

[JASDEC]
Redundant configuration connecting to two locations in AP2, AP3, or AP4 is required.
Having single configuration to AP2 can be selected only for the line connecting from users' backup site.

[TFX]
Redundant configuration connecting to two locations in AP2, AP3, or AP4 is recommended.
Redundant configuration of receiving from both multicasts 1 and 2 (multiple single configuration via 2 lines) is recommended to secure reliability.

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