Push Button And Led Indicator Interaction; Table 7. Led Indication - No Port Selected; Table 8. Led Indication - G.703 Port Services - ADTRAN 6540 Installation And Maintenance Manual

Push Button and LED Indicator Interaction

The following is a further explanation of the required interaction between the front panel
pushbuttons and LEDs.
When no port has been selected, (no flashing port LEDs) only the PORT SELECT push button
is enabled, and the LLOOP, RLOOP, and BERT LEDs indicate the status (refer to
Test
SHDSL, G.703, or Nx64k interface test condition active
No interface test condition active
When the PORT SELECT push button is first pressed, the NX64K LED flashes (if the model
has an active Nx64K port) to indicate that the Nx64K port has been selected. The LLOOP,
RLOOP, and BERT LEDs indicate the state of tests only on the Nx64K port. Additionally, the
LLOOP, RLOOP, and BERT pushbuttons initiate/terminate tests only on the Nx64K port.
When the PORT SELECT push button is pressed again, the G.703 LED flashes (if the model
has an active G.703 port) to indicate that the G.703 port has been selected. The LLOOP,
RLOOP, and BERT LEDs indicate the state of tests only on the G.703 port.
If there is only a single service on the G.703 port, then the LLOOP, RLOOP, and BERT
pushbuttons initiate/terminate tests only on this G.703 service. If there are multiple G.703
services on the G.703 port, then the LLOOP, RLOOP, and BERT pushbuttons are disabled,
and the LLOOP, RLOOP, and BERT LEDs indicate the status of all services using the G.703
port (refer to
Test
One or more G.703 service test conditions active
No Service test condition active
When the PORT SELECT push button is pressed again, the SHDSL LED flashes (if the
SHDSL port push button option is enabled) to indicate that the SHDSL port has been selected.
The LLOOP, RLOOP, and BERT LEDs indicate the state of tests on the SHDSL payload.
61230001E1-5E

Table 7. LED Indication - No Port Selected

Table 8).

Table 8. LED Indication - G.703 Port Services

Installation
Table
Description
LED is on
LED is off
Description
LED is on
LED is off
7).
13