Specifications

Chapter 2. Setting Up the Express 3000 SP
61203153L3-20 Express 3000 SP User Manual 2-9
Figure 2-5. POTS Interfaces
Connecting Your Primary Telephone
The Basic Rate ISDN line, required for using the Express 3000 SP, in-
cludes two ISDN phone numbers (see also,
Express 3000 SP Shipping
Contents
on page 1-4). The Express 3000 SP allocates ISDN phone
number 1 to POTS port 1. Connect your primary telephone (the one
you use to talk to people) to POTS port 1 (see Figure 2-5).
Shared Port for Analog Devices
ISDN phone number 2 is shared by the EIA-232 port and the POTS
port 2; therefore, you cannot use both ports at the same time. For ex-
ample, you can’t use a FAX machine connected to POTS port 2 at the
same time you are using the Express 3000 SP for, say, Internet access.
ISDN data calls and external modem applications must be
placed to ISDN phone number 2, so provide this number as
your FAX number, etc.