User guide

Operation
68 (87) EN/LZT1083982 R4
2000-12-07
Press the button again to instantly regain Internet access. The PipeLock LED will indicate
whether PipeLock is activated (LED lit) or not (LED unlit) at any time.
Figur 63: PipeLock LED symbol
The PipeLock status will be retained if the modem is reset or if the power is interrupted.
That is, if PipeLock is activated just prior to a power interruption or reset, it will return to
the active state when the power-up diagnostics are complete.
6.3 Operational states
As the HM220d ADSL modem is powered up and goes through its startup and operation
phases, there are a number of different operational states that it may pass through. Each
of these states and its associated LEDs are described in the following sections.
6.3.1 Power-up diagnostics
In the Power-up Diagnostics state, the HM220d ADSL modem executes diagnostics to
verify the integrity of the hardware and software. This state is entered when the modem is
first powered up or after a power cycle.
When Power-up Diagnostics starts, all of the LEDs will turn ON briefly. This allows you
to verify that all LEDs are functioning properly. The Power LED will remain ON and the
remaining LEDs will remain OFF while the diagnostics routine completes.
Figur 64: LED symbols for Power, USB, Ethernet, ADSL and PipeLock
6.3.2 Initialization
During the Initialization state, the HM220d ADSL modem performs all the steps
necessary to register with the system, including finding a downstream channel,
registering with the service provider, and so on. This state is entered when the Power-up
Diagnostics state successfully completes or when the downstream channel is lost.
During this state, the ADSL LED flashes slowly. The USB or Ethernet LED is normally
ON, and blinks when there is activity.
Figur 65: LED symbols for USB, Ethernet and ADSL