Getting Started Using FirstGear for the Model XM128U ISDN Digital Modem
Physical Description 2-3
Rear Panel
As illustrated in Figure2-2, the rear panel contains a power switch; a power receptacle; and ports
to connect a computer, ISDN line, and two analog devices (telephone, fax, or modem).
Key:
1 = ON/OFF switch
2 = Receptacle for power adap ter
3 = RS-232 communication (COM) po r t for connecting to a computer
4 = ISDN port for connec ting to an ISDN line
5 = PHONE 1 and PHONE 2 ports for connecting analog devices (telephone, fax, or modem)
Figure 2-2. Rear panel of the Model XM128U modem
Table2-2 describes the components on the rear panel of the Model XM128U modem.
Table2-2. Rear panel components
Label Description
ON/OFF This switch turns power on or off.
POWER This receptacle is for the power adapter.
RS-232 This RS-232 COM port is for connecting the Model XM128U modem to the seri al port of
a computer or data terminal.
ISDN This port is for connecting the Model XM128U modem to the ISDN line.
PHONE 1 This port is for connecting the Model XM128U modem to an analog device (telephone,
fax, or modem).
PHONE 2 This port is for connecting the Model XM128U modem to an analog device (telephone,
fax, or modem).
7861MEA
RS-232
POWER
ON/OFF
1 2 3
ISDN PHONE 1PHONE 2
5
4
Xm128u_bk.fm Page 3 Wednesday, February 4, 1998 4:32 PM