Verilink PRISM 3060-10 (34-00252.4) Product Manual - Manual (Page 33)

DSU MP Configuration 25
TDM (Port 1A, 1B, 2A, 2B, 3A, 3B, 4A, 4B, 5A, 5B, 6A, and 6B)
In TDM mode, both DTE interfaces are active and are multiplexed together into
the single DDS network path as shown in Figure 3-11. It allows access to
configuration submenus specific to DTE interface B.
Port
Type
For ports A and B, the Port Type field displays the installed DTE interface:
RS-232C, V.35, or EIA-530.
For port B, the interface is RS-232 only.
Port
Transmit
Clock
Used to select the clock that the unit uses to sample the data transmitted from the
DTE. When set to
INTERNAL , the data is sampled directly with the transmit data
clock that is also supplied to the DTE as Transmit Clock. The EXTERNAL option
uses the external clock supplied by the DTE.
V.54 Loop Selecting Enable allows the unit to respond to in-band V.54 loop commands. If
Disable is selected, the unit ignores these commands.
CTS Control
and DSR Control
Setting these fields to FORCE TRUE or FORCE FALSE (in DSR mode only)
forces the port control lead output state. INTERNAL allows for normal operation.
DCD Control Setting this field to FORCE TRUE forces the port control lead output state.
INTERNAL allows for normal operation. Far RTS is similar to INTERNAL except
that in far-end units the RTS lead becomes an additional qualifier. This selection is
only available when in TXP-I or TXP-II mode. When using the Far RTS feature,
ensure that units at both ends are configured for Far RTS. If the unit at the far end
is a 41TDM, its RTS parameter must be set to Normal; if it is set to Force On, Far
RTS does not work.
RTS Control Request To Send is an input to the unit from the DTE. Clear To Send is an output
from the unit to the DTE. The behavior of RTS and CTS is set as follows. In the
External setting, the unit reacts to RTS from the DTE. When RTS is on, the unit
transmits data normally and turns CTS on. When RTS is off, the unit transmits idle
code to the network and turns CTS off. In the Force True setting, the unit ignores the
state of the RTS lead from the DTE and forces it on internally and forces CTS on.
Alarm on
DTR Loss
Selecting Enable allows the unit to go into alarm on loss of DTR. The default
setting is Disable.
Figure 3-11 TDM Mode Functional Block Diagram
DTE Port A
TDM T1 DS0 DSU
DTE Port B