Restoring Defaults
If your TLS-4A does not operate as expected, a previous user’s feature
programming may be the cause. To restore the unit to default operating
conditions:
·
Be sure all phones are on-hook, then toggle the front panel switch to OFF,
then to MAN/RING and hold
until the POWER LED comes on
, then
release.
·
Read the previous section (Demonstrating Equipment) to place a call from
any line to any other.
-or-
·
Enter **99## to access programming mode and enter: *00#0#*00#0#
Testing Installations
The procedures below assume that the TLS default settings have
not
been
changed. If you have trouble with any of the following procedures, the TLS
may have been programmed already.
Testing key system and PBX lines
·
Connect the TLS-4A lines to Tip and Ring of PBX or key system central
office loop start trunks (E&M, DID, or ground start trunks
cannot
be tested
with the TLS-4A).
·
If a ground reference is required, connect a 0.080-inch diameter pin tip
probe to the chassis ground reference jack on the unit back panel (Figure
1).
Figure 4 shows the pin connections for the alligator clip cables used to connect
TLS-4A lines to a terminal block.. Please see Figure 5
in Chapter 5 for a generalized diagram of key system test connections.
Caution:
When ringing is applied, the Ring lead of the modular jacks carries
up to 95 VAC referenced to ground (alternating polarity).
Be sure the
TLS-4A power switch is off before handling any cord ends.
Telephone Line Simulator 4A
Page 8