Technical data

Requirements for European Operation
116273-B Rev 00
D-11
Determine the clearance and creepage distance between adjacent points as
follows:
• The clearance distance (X) is the shortest distance between two points
measured through the air.
• The creepage distance (Y) is the shortest distance between two points
measured across a surface.
If you have any questions, consult with a competent telecommunications safety
engineer. Failure to install the ISDN BRI or serial adapter module according to
these instructions invalidates the General Approval.