Patton SmartNode 4131 - ISDN Compliance

ISDN Compliance 39
SmartNode 4131 User Manual •
ISDN Compliance
The device is approved for connection to the public ISDN telecommunication network.
For the ISDN connection to a carrier network, it shall be con-
nected to a network termination device and not connected
directly to an outside POTS line.
CAUTION