56047301 3 © 2014 Telguard
No Service Condition (NSC)
The Telguard declares a no service condition (NSC) when 1 of the following occurs.
The Telguard device is unable to register with the cellular network.
The Telguard device has registered with the cellular network and the measured “receive” cellular radio
signal strength at the protected premises drops to -114 dBm or less.
NSC is programmable to trip the supervisory relay output (STC relay) after a variable period of time. The STC LED
will flash 4 times immediately after losing cellular service. NSC restoral occurs immediately after cellular service
has been acquired.
Radio Failure Condition (RFC)
Radio communications failure condition (RFC) is declared when the Telguard is unable to transmit over the
cellular network even with acceptable signal strength. RFC is indicated by the STC LED flashing 5 times. RFC is
cleared when communication with the TCC is restored.
Panel Presence Failure Condition (PPFC)
Panel presence failure condition (PPFC) is declared when the Telguard is unable to detect the presence of the
alarm panel. PPFC is indicated by the STC LED flashing 7 times. PPFC is restored immediately after the connection
to the panel is restored and maintained for the delay period.
NOTE: The factory default for PPFC is Disabled and needs to be Enabled for its use.
Control Failure to Communicate (CFC)
The Control Failure to Communicate (CFC) feature is an option that allows the Telguard unit to monitor the
number of communication attempts the alarm panel makes over Telco before the Telguard becomes the main
path of communication. This feature works by monitoring the alarm panel from the time it goes off-hook, and
attempts to communicate, to on-hook status, and comes off-hook again. Each change in state by the alarm panel
from off-hook to on-hook to off-hook again is considered an attempt. If this continually happens for a specified
number of times within a specific time period, then the Telguard seizes the line and takes over as the main
communication path for the alarm panel. If the Telguard goes into CFC, then it will not allow the panel to
communicate via Telco again until the panel has been on-hook for 10 consecutive minutes.
Note that the CFC condition causes the Telguard to redirect communications to the cellular channel, but it is not
indicated on the STC LED, nor does it cause either of the external relays to be tripped.
NOTE: The factory default for CFC is Disabled and needs to be Enabled for its use. When the TG7 CDMA
Series is configured as the Sole Path, the CFC function is not applicable.
Link Supervision and Standard Line Security
In some high security commercial burglary applications, the communication path needs to be monitored
periodically. TG-7 CDMA models support those applications when Link Supervision feature is enabled. When this
feature is enabled, TG-7 CDMA models also meet the requirements for Standard Line Security (equivalent to
previously known AA Grade security) when used with a UL Listed compatible alarm panel. Once the TG-7 CDMA
model is provisioned with the Link Supervision option, the TCC constantly monitors the cellular path and sends a
specific message to the central station if the path is broken or a compromise attempt is made. After the initial
account activation is done, the installer must verify the Link Supervision by turning off the device and making
sure an alarm with the specific code is delivered.
WARNING: Standard Line Security has only been evaluated between the TG-7 CDMA Series and the
TCC. It is the responsibility of the installer to verify Standard Line Security from the Listed alarm panel to
the Listed receiver through the TG-7 CDMA models as marked on the alarm panel and as indicated in the
manufacturer's installation instructions.
