9 utm i – Datatek UTM User Manual
Page 51

U T M U s e r ' s M a n u a l
01/18/08
51
9 UTM I
NTERWORKING
9.1
INTERWORKING WITH THE
SWT
The Universal Trunk can be made to inter-work with an existing SWT. This allows the UTM to be
a direct spare for existing installations. It should be noted that when inter-working with an SWT,
the UTM-> SWT direction will enjoy the benefits of the UTM’s per VCC priority queueing while the
SWT->UTM direction will keep the SWT’s two queue model for all VCCs.
Consider the following diagram:
UTM
Modem
Eliminator
SWT
The configuration is as follows:
trunk type=hdlc phy=v35 modtype=swt
The SWT should be configured in NRZ (I/O board switch) operation.