modems are easily identifiable by means of their unique design. Check
the product photos to see if you can recognize your modem:
In case you have
a "black box":
SpeedTouch Home, SpeedTouch 350i, SpeedTouch 570,
SpeedTouch Pro, SpeedTouch Pro with firewall or SpeedTouch
Pro with firewall SHDSL, you can always recognize your model by checking
the product label on the bottom of the modem.
570 Wireless ADSL Router is easily recognizable by having an extra
button at the back of the modem (the association button).
is the distinction between the SpeedTouch Pro and SpeedTouch Pro with
firewall: "with firewall" is not mentioned on the product label.
How to recognize
your model then? By looking up the PRL code in the top right corner of
the product label.
This is a number
made up of "3EC" then 5 digits and 4 letters
e.g. 3EC 18607 CAAA.
Here you need
to concentrate on the last 4 letters. If the first of them is "C"
or "G" your model is definitely a "Pro". If it is
a "D" of a "J" - then you got yourself a Pro with
is the difference between the ISDN and POTS models. Plugging in a wrong
modem into a wrong connection will prevent your modem from functioning.
How to check
which one you have? In the very same PRL code in the top right corner
on the product label you need to check the 5 digits in the middle of the
code. If they end on "623" or "624" your modem is
an ISDN one. Otherwise it is a POTS model.