4.1 Direct connectivity 1 Technical connectivity of the participant with the exchange system is accomplished via proprietary applications. 2 The Exchange may grant on application of a participant the use of the connectivity infrastructure of a third party commissioned by the participant and approved by the Exchange if compliance with the provisions of the Exchange's rules and regulations is also ensured by the third party. 3 The technical connectivity of proprietary applications and the connectivity infrastructure of third parties is the responsibility of the participant. The Exchange may undertake or demand an acceptance run or certification of such proprietary applications and connectivity infrastructure. 4 If the proprietary applications or the connectivity infrastructure or leased lines of a third party put the operation of the exchange system at risk, the Exchange may prohibit or suspend the use of such.
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