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Front Panel Operation
1.8
SIGNALING STATUS LEDs
The Signaling Status LEDs show the TRUNK TYPE that the AM8a is IMITATING and whether it
is operating as an analog terminal/line or switch, or as a PCM terminal. Figure 1-3 shows
these indicators and identifies the menu parameters which set up the operation (see Section 2
sub-sections for appearance of menus and more information on the parameter selections). For
more information on the signaling keys shown in the figure, refer to 1.6.
TRUNK :
TRUNK TYPE
E & M 4W
CONFIG :
E & M 2W
(see 2.4)
DID
SF
loop
ground
CIRCUIT
ANALOG/PCM
CONFIG:
analog
(see 2.2.2)
pcm int clk
pcm loop clk
(see 2.3.1
PCM
- 2.3.4)
CONFIG 1:
PCM selections have no
effect on operation if
CIRCUIT is analog
PCM
(see 2.3.5)
CONFIG 2:
panel legends for LEDs
= lit
= flashing
= not lit
a, b, c, d LEDs indicate signaling bits for the PCM CHANnel
L
selected. They will scroll if there is no frame sync (see Section 6, sub-
sections 6.9 and 6.10 for meter display of frame sync and bits). When
frame sync is established, bits will be lit in patterns to indicate
CHANnel conditions.
Typical switch actions resulting in LED indication as condition is
s
detected. See sub-section 1.6 for more information.
February 10, 2000
(18-0037)
LEDs indicate unit configuration based on menus
IMITATE
MODE
(see 2.1)
Switch
CONFIG:
T e/Line
TRUNK /SLC
®
TERMINAL/LINE
TYPE
EMULATE
/
OFFHOOK
E&M/SLC
®
R-GND
LOOP/DID
GND ST/SF
a
b
c
PCM2
PCM1
INPUT
FRAMING
pcm 1 on
{
SLC
96 I
®
pcm2 on
SLC
96 II
®
rpt 1 to 2
D3/D4
rpt 2 to 1
ESF
OFF HK a/b
auto
0/0
.
.
.
X/1
Figure 1-3. Signaling Status LEDs
1-14
AM8a Instruction Manual
MODE
emulate
monitor
SWITCH
s
EMULATE
SEIZE
E
M
T-GND
RINGING
RING
T+R–
T–R+
REV
d
a
b
c
d
L
INPUT
*
ZERO SUP
CHAN
KP
1
AMI
When SLC
96 I or II is selected,
®
E&M/SLC indicator will flash.
MODE must be monitor.
ON HK a/b
auto
0/0
.
.
.
X/1
0037-S01.L_
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