Specifications

4-54
Reference Guide
Model No.
Running Head
Cross-Connecting WAN Time Slots System Configuration and Operation
Make your selection with the space bar and arrow keys. The arrow key moves from slot to slot,
and the space bar toggles between selecting and deselecting the time slot.
The number of DS0
time slots assigned to this half of the cross-connect circuit must equal the number assigned to
the other. Otherwise, the system will reject the connections and generate an error message.
TEST
The second Test column lets you select the test pattern to be applied to this circuit toward the
second WAN link specified. Figure 4-30 shows the option set to
off
. Like the previous Test
column, the choices are
off
(no testing);
all 0
(all zeros);
all 1
(all ones);
m_oos
(Multiplexer
Out Of Synchronization);
1:1
(a 1 followed by one zero);
1:7
(a zero is followed by a 1 and
six more zeros);
lpbk
(loopback);
300 Hz
(steady 300 Hz tone);
1KHz
(steady 1 kHz tone);
and
3KHz
(steady 3 kHz tone).
When the circuit is saved, the system will send the selected pattern toward the second end of
the circuit on each time slot, to facilitate testing. When circuit testing is finished, reset the Test
field to
off
. The Loopback (
lpbk
) option loops the circuit back toward the first WAN link
specified.
Users dealing with a voice cross-connect circuit (with or without signaling) can access
capabilities from the WAN cross-connect screen. See the review at the end of this section.
TYPE
The Type column selects the type of pass-through circuit, as shown in Figure 4-30. The
choices are
v
(voice);
v&s
(voice with signaling), and
d
(data). Use v for a voice circuit that
does not require trunk conditioning. Use
v&s
for a voice circuit with signaling. This option
preserves A/B (robbed-bit) signaling on the selected time slots and provides trunk
conditioning. Use
d
for data circuits, which also support trunk conditioning.