Справочник Пользователя для Adtran 2FXS/DPO PM

4

Section 61109403L2-5, Issue 3

61109.403L2-5C

When the option BOTH is selected, tone is placed on
both the loop and the network.

Accessing Tests Through EASYMENU
Once the unit is in normal operation, these test features
are accessed by selecting:

Channel Unit Menus

(3)

Desired slot

(1-24)

Test

(4)

These tests are service affecting.

Faceplate Indicators
The 2FXS/DPO faceplate indicators and descriptions
are explained in Table F.

The 2FXS/DPO PM has four faceplate indicators and a
depressed provisioning switch.  The front panel PM
(Performance Monitoring) indicator 

Flashes during

control link establishment and remains 

ON after the

channel unit has been remotely provisioned.

If the channel unit has been remotely provisioned, the
operator can alternate between the remote configuration
data stored in nonvolatile memory or manual switch
settings by pressing the momentary AP (Alternate
Provisioning) switch located on the front panel.

The REM indicator remains 

ON when the channel unit is

operating based on Remote Provisioning, and is 

OFF

when based on manual switches.  If the channel unit has
never been remotely provisioned, the AP switch has no
effect and the REM indicator remains 

OFF .  The REM

LED 

Flashes when an invalid operation mode is selected.

REM

Off
Green
Flashing

Unit is manually provisioned.
Unit is remotely provisioned.
Configuration/provisioning error.

BUSY

Off
Green

Network and Loop On-hook.
Network, Loop, or both are Off-
hook.

PM

Off
Green

PM mode is not operating.
PM mode is operating.

TEST

Off
Yellow

All tests are inactive.
Test is active.

AP

Depressed

Alternate provisioning switch.
Changes provisioning source
from manual to remote or remote
to manual.

2FXS/DPO

1109403L2

PM

AP

REM

PM

TEST

BUSY

The 2FXS/DPO PM occupies one card position in the D4
channel bank.  The connector pin assignments are
detailed in Figure 3.

The 2FXS/DPO performs
a self test after power on.
During this time all four
indicators turn 

On  in a

predefined sequence
while the  2FXS/DPO
verifies proper operation
of critical circuits in the
design.  After successful
completion of the self test,
all indicators function in
their normal mode.

Digital Loopback Test
The Digital Loopback Test
is used to test loopback
data coming from the
network.  Received data,
or RNPCM, is latched in
during the appropriate
receive time slot.  This
data is then placed on the
TDATA bus during the
unit's transmit time slot.

Network On-hook/Off-hook Test
The Network On-hook/Off-hook test is used to test
signaling sent to the network by the unit.  When On-hook
Test is selected, On-hook signaling is sent to the network.
When Off-hook Test is selected, Off-hook signaling is
sent to the Network.  The customer loop is forced On-
hook while this test is active.

Customer Ringing Test
The Customer Ringing Test will activate the unit's ring
relay in a 2-on/4-off ring cadence, providing ringing to
the customer loop when a ring generator is properly
connected  to the channel bank.

1004 Hz DRS Tone Generation Test
The 1004 Hz DRS (Digital Reference Signal) Tone
Generation test is used to send the DRS signal  to the
network, loop, or both.  When Network is selected, the
DRS is sent to the network from the unit.  The far end unit
should measure a 1004 Hz tone at a level determined by
the circuit gain of the far end unit.  When Loop is
selected, the DRS is placed on the receive path.  The
loop receive level is determined by the following equation:

Receive Level = 0dB - Attenuation

FRM GND
-12V
12V GND
+12V
5V GND
TWD
TSP
TSQ
RNPCM
RFA
TDCLK

RSP
RNDIS
-48 FRT

-48 SPRT

TFCC

2N
T

RT
RG

+5V

TDATA

RFB

RCLK

RWD

RSQ

-48F

-48SD

R

BT

20HZ

IN