TG-7 Dual Path Series Installation & Operating Guide
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56052601 Rev B © 2022 Telguard
No Service Condition (NSC)
A no service condition (NSC) occurs when the communicator is unable to register with the cellular
network.
NSC can be configured to trip the supervisory relay output (STC relay) after a programmable period
of time. The STC LED will flash 4 times immediately after losing cellular service and dial-tone will
cease to be provided, independent of the STC assertion and programmed assertion delay. NSC
restoral occurs immediately after cellular service has been acquired.
Radio Communications Failure Condition (RFC)
Radio communications failure condition (RFC) occurs when the communicator is unable to receive a
response from the TCC. When RFC is declared, the STC LED will flash 5 times, dial-tone will cease,
and the STC relay will trip as programmed. Restoral of this condition occurs after 10 minutes or
when a message is received from the TCC.
NOTE: When End-to-End acknowledgement feature is enabled, a message that fails to deliver to
the Central Station will trigger an RFC condition.
Panel Presence Failure (PPF)
Panel presence failure condition (PPF) occurs when the communicator is unable to detect the
presence of the alarm panel. PPF is indicated by the STC LED flashing 7 times. A supervisory report
is generated and sent to the TCC for Central Station delivery upon detection of PPF. Restoral of this
condition occurs when the alarm panel is detected as present for the selected delay time.
NOTE: The factory default for PPF is Disabled and needs to be Enabled for its use. For the PPF
feature to work, Tip, Ring, and the return connections for Tip and Ring must be connected
between the panel and the communicator.
UL/ULC Compliance Note:
If the wiring distance between the panel and the communicator is
greater than 20 ft. (18m or in different rooms in Canada) or the connection is not mechanically
protected (metal conduit required in Canada), PPF must be enabled. Since fire systems must
comply with these restrictions (UL 864, ULC-S559), PPF is not required for fire systems.
Link Supervision
In order to satisfy UL and ULC requirements, the communicator can enable link supervision at preset
intervals. Once the communicator is provisioned with the Link Supervision option, the TCC
constantly monitors all the enabled communicator pathways and sends a specific message to the
Central Station if a path is broken or a compromise attempt is made. After the initial account
activation has completed, the installer must verify the Link Supervision by turning off the device and
making sure an alarm with the specific code is delivered.
Complete Power Supervision
The communicator can supervise and report status of the backup battery and AC power source
when powered from the AC adapter. It has an integrated control and power component which
keeps the
battery charged and is also supervised. Furthermore, the communicator
can report on low voltage events when powered from a DC source at the alarm panel.
Low/Missing Battery Condition (LBC)
When using AC as the main power source, the communicator checks the backup battery voltage on
initial power-up and every 60 seconds thereafter. If the battery voltage is less than 11.6 volts, it
an LBC occurs whereby the STC LED blinks twice, and the
