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ISDN Connector question

By rbennett ·
The question came up and no one seems to remember the answer:

"What is the pinout of a two wire ISDN modular jack (the jack is an 8 pin modular type)!

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ISDN Connector question

by McKayTech In reply to ISDN Connector question

For the 2-wire (U) interface on an RJ-45 jack:
Ring goes to pin 4
Tip goes to pin 5

For the 8-wire (ST) interface:
pair1 pins 4,5
pair2 pins 3,6
pair3 pins 1,2
pair4 pins 7,8

Within each pair, odd pins are positive, even pins are negative.

paul

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ISDN Connector question

by rbennett In reply to ISDN Connector question

The question was auto-closed by TechRepublic

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ISDN Connector question

by GIJoe In reply to ISDN Connector question

Is this still a problem?

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ISDN Connector question

by rbennett In reply to ISDN Connector question

The question was auto-closed by TechRepublic

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ISDN Connector question

by rbennett In reply to ISDN Connector question

This question was auto closed due to inactivity

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