If you
have the wrong handset type your phone
will transmit low or not at all!!
Intertel
changed handset types on the
ESP, IMX, GLX, and GMX phones half way
through production and kept the old part
numbers on the new phones.
USE
WITH ELECTRET HANDSET ONLY!
If the sticker on
the phone says this you have to use an
E1 handset!
Some ESP, GLX and GMX DVK phones
say this on the bottom tag. That means
they need an electret (or E1) handset.
An incorrect handset will either not
transmit or transmit very quiet. The
easiest way to tell if you have an E1
handset is by looking just under the
earpiece. You will see a rectangular
notch, if E1 is printed inside the notch
you have an electret handset, if not,
it’s a dynamic handset.
Please note that the
handset you use could be an after market
handset without the E1 printed in the
notch, or your phone could have been
modified at some point in its life. If
your phone is transmitting low or not at
all try a new cord and both kinds of
handsets.
