I
NSTALLING
Y
OUR
ISDN TA
Familiarizing Yourself with Your ISDN TA
You should take a look at the front and back panels of your ISDN TA
before installing it.
Front Panel
Figure 2-1 Front Panel LEDs
Alert – Lights amber when there is an ISDN connection problem.
Blinks amber when code is being updated.
Blinks green when there is voice mail waiting for a telephone
connected to the ISDN TA through one of the Analog Device
Ports.
This LED is off when the ISDN TA is operating normally.
PWR – Lights green when power is on and remains lighted as
long as power is supplied to the unit.
B1 – Lights green when there is a data or voice transmission on
B-channel 1.
B2 – Lights green when there is a data or voice transmission on
B-channel 2.
SD – Lights green when information is being transmitted from the
computer to the ISDN TA.
RD – Lights green when information is being transmitted from
the ISDN TA to the computer.
DTR – Lights green when an application is communicating with
your ISDN TA.
CD – Lights green when there is an active data connection
between the ISDN TA and a remote site, such as an Internet
Service Provider or corporate network. (When CD is lighted but
B1 and B2 are not, this typically indicates that a data connection
has been established over the ISDN line’s D-channel in AO/DI
mode.)
