9-4 High Speed Data Ports
Model No.
Running Head
WAN
The WAN setting identifies the WAN or OWAN port to which the output of this port is
directed. I (the options are wan-1 to wan-4, and owan-1 to owan-4).
MODE
The Mode parameter allows you to identify how the HSU port appears to the device on the
other end of the interface cable. The dce option causes the port to be recognized as a DCE
(data circuit-terminating equipment) device. The dce option is always chosen in the first
offering of the IMACS-200.This allows the end user to connect a dte device to the port.
TS
The TS (time slot) setting identifies the time sl ots on the WAN link when wan or owan is the
WAN/SRV setting. The HSU ports can use many time slots on a single WAN or OWAN port
to create a super-rate circuit for an individual HSU por t. One or a ll DS0 time slots on a sing le
T1 or E1 link can be assembled for use by an HSU port in order to satisfy the speed
requirements of the DTE.
The time slot numbers range from 1 to 24 for T1, and 1 to 31 for E1. Figure 9-2 shows the
display when table is selected. Using the space bar to select and deselect the time slot, this
example shows time slots 10 to 12 on WAN 1-1 assigned to this port. The time slot
assignments do not have to be contiguous on any card port.
Table 9-3. HSU State Status
Control Leads Active WAN Link Down Standby
RLSD High or follows remote RTS Low Low
DSR High High Low
CTS Definable Definable High