Leds; Dialer Led; Figure 10:C900Ttl-E Led Locations; Table 4: Dialer Led Functions - Bosch C900TTL-E Installation Manual

3.2

LEDs

The C900TTL-E has four LEDs. Items 1, 2, and 3 in
Figure 10 indicate communication status. Item 4 in
Figure 10 indicates network connection status. Refer to
Table 6 on page 14.
Figure 10: C900TTL-E LED locations
6
5
1 - Diagnostic LED
2 - Serial (Channel) 2 Status LED
3 - Serial (Channel) 1 Status LED
4 - Ethernet Network Status LED
The C900TTL-E has two dual-colored LEDs that
indicate its status:
5 - System LED
6 -

Dialer LED

Table 4: Dialer LED Functions

Dialer LED
Color State
Off Off
Green Solid
Blinking (5 Hz)
Red Solid
Blinking (5 Hz)
Red or green Alternating (5 Hz)
1
If Auto Fallback After Error is enabled (Switch 5 = ON), the C900TTL-E connects the dialer to the phone line on the next line seizure. If the
dialer does not seize the line, this condition ends after two minutes.
2
If the dialer sends a valid message, the LED returns to a blinking green status. If the dialer hangs up, an intercept error is generated. The
alternating LED also occurs when the line is seized, but no transaction is occurring (for example, the C900TTL-E is waiting for the dialer to
return on-hook). This situation occurs when the C900TTL-E returns to Intercept Mode, or while the dialer has seized the line.
Bosch Security Systems, Inc. | 5/07 | 4998122718-02
C900TTL-E | Installation Guide | 3.0
3.2.1
The Dialer LED (Item 5 in Figure 10) indicates the status
of the digital dialer interface (Hz = cycles or flashes per
second). Refer to Table 4.
1
2
3
4
Function
C900TTL-E is in permanent Fallback Mode because of a command or no
power.
C900TTL-E is in Intercept Mode and the dialer is on-hook
C900TTL-E is in Intercept Mode and the dialer is off-hook.
C900TTL-E is in Fallback Mode because of an error, Intercept Inhibit or
Override inputs, or a command
The previous (or present) off-hook condition caused an intercept error.
The dialer is off-hook, but the last message was rejected because of a bad
checksum or other logical error.
Dialer LED
The DIALER LED is invalid, and the
C900TTL-E is in Fallback Mode and does
not poll the D6600 when:
•
Blinking red (repeating code), or
•
Steady green, red or off
2
C900TTL-E Setup
.
1
13