TELOS TWOX12 USER’S MANUAL
INSTALLATION
CHAPTER 2 23
ISDN S interface connector
PIN FUNCTION
1 N/C
2N/C
3 S Transmit to network +
4 S Receive from network +
5 S Receive from network -
6 S Transmit to network -
7 N/C
8N/C
The S interface is a standard modular RJ-45 style jack with the pin-out shown above.
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IMPORTANT!
As with any piece of modern electronic gear, it is advisable that precautions be taken
to prevent damage caused by power surges. Special ISDN S interface surge protectors
can be used to offer some degree of protection at the S interface jack. It is the user’s
responsibility to ensure that adequate protection is provided
.
ISDN S interface cable
BRI S Interface cable.
Note: Pin 1 is to the left when viewed as above (with pins facing you and at the top).
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