TRENDnet TW-H6W1IR - Manual (Page 113)

TW-H6W1IR ISDN Remote Router
Configuration and Management 105
is not capable of using Stac compression, the two devices will still
communicate, albeit without using Stac compression. When disabled,
Stac compression will never be used on this port.
Multi-Link PPP – Enables/disables multi-link PPP on this port.
Individual ISDN ports can be set to join the MLPPP bundle by
enabling Multi-Link on each port. When enabled, the port will join the
MLPPP bundle. Please note that the TW-H6W1IR contains only one
MLPPP bundle. All ports taking part in MLPPP, even the first or
primary port which initially establishes the connection, must have Multi-
Link enabled. The ISDN port that first established the connection is the
Primary ISDN Port and will not disconnect due to a BOD Low
Threshold event, but is subject to Dial on Demand (DOD) settings.