Chapter 3. Operation
61200.080L1-1
FXS+ Dual Voice Option Module
19
disconnect supervision. This mode also requires other
options to be selected. These options are: supervi-
sion, dial tone, loop reverse battery, and ringback.
These options are described in detail elsewhere.
Ringing cadence for incoming calls is two seconds on,
four seconds off.
• TANDEM_GS
This mode sets the port to use E&M signaling on the
T-Span and ground start supervision on the analog
2-wire interface. Ground-start operation is often used
with trunk interfaces to PBX and key systems to
prevent glare conditions. Appropriate TANDEM
options must be chosen in this mode as described for
TANDEM_LS. Ringing cadence for incoming calls is
two seconds on, four seconds off.
• PLAR
This mode sets the port to use PLAR signaling on the
T-span and loop-start supervision on the analog
2-wire interface. This mode is used to provide a point-
to-point
hot
line, so that when one telephone is lifted
off-hook, the telephone at the other end rings until it
is also picked up. When both ends are off-hook, a
direct point-to-point connection is established.
Ringing cadence is two seconds on, four seconds off.
RX LVL (TLP) (Receive Level/Transmit Level Point)
RX LVL (TLP) sets the RX direction transmission level
points (TLP). The TLP is indicated in dBm and the
relative loudness is indicated by a bar graph display.
Settings change immediately as the bar graph is scrolled.
Choice range:
• – 8 B m to 0dBm, in 1dB steps
TX LVL (TLP) (Transmit Level/Transmit Level Point)
TX LVL (TLP) sets the TX direction transmission level
points (TLP). The TLP is indicated in dBm and the
relative loudness is indicated by a bar graph display.
Settings change immediately as the bar graph is scrolled.
Choice range:
• +3 dBm to –5 dBm, in 1dB steps
