ADTRAN Octal E&M, Руководство пользователя

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Chapter 3. Operation
3-8 Octal E&M Module User Manual 61200313L1-1
S
IG
I
FCE
Selects signaling interface operation. The module supports all E&M types -
I through V, as well as Transmission Only (TO) mode. Press-to-talk (PTT)
mode is functionally identical to the E&M Type V mode.
VF I
FCE
Selects either 4-wire or 2-wire operation of the Voice Frequency (VF) Inter-
face.
R
X
G
AIN
Adjusts the level of the signal output at the VF interface. The available range
is from +6 dB (loudest) to -12 dB (softest).
T
X
G
AIN
Adjusts the encoded level of the signal transmitted by the module in the
PCM stream. The available range is from 6+dB (loudest) to -12 dB (softest)
ATLAS 550 FEATURES USED WITH OCTAL E&M MODULE
Two additional ATLAS 550 menu items can operate in conjunction with the
Octal E&M Module:
F
ACTORY
R
ESTORE
and R
UN
S
ELFTEST
.
F
ACTORY
R
ESTORE
You can restore the factory default settings for the Octal E&M Module by
pressing
F
either while the cursor is over the S
LT
number (this action restores
the factory settings for all of the module options) or while the cursor is over
an individual field (this action restores factory settings for the particular
field only).
R
UN
S
ELF
-
TEST
R
UN
S
ELFTEST
, a submenu of the ATLAS 550 main menu item T
EST
, executes
both the Octal E&M Module internal test and the ATLAS 550 internal test.
When
R
UN
S
ELFTEST
displays, place the cursor on it and press
Enter
to exe-
cute the test. The unit continuously changes the display on the self-test log
screen until all test results are shown. For additional information on
R
UN
S
ELFTEST
, see the ATLAS 550 User Manual.
When the digital signal is connected through the PSTN, a setting
of -3 dB should be used.
Unplug the cables from the modular jacks before running a self-
test on the E&M Module.