NETGEAR XM128 ISDN - Manual (Page 24)

Reference Guide for the Model XM128 ISDN Digital Modem
1-4 Introduction
Key:
1 = PWR (power) LED
2 = ISDN LEDs
3 = RS-232 COM LEDs
4 = PHONE 1 and PHONE 2 LEDs
Figure 1-2. Front panel of the Model XM128 modem (with U interface)
LEDs on the front panel of the Model XM128 modem allow you to monitor and diagnose the
device.
Table 1-2 describes each LED.
Table 1-2. LED descriptions
Label Color Activity Description
PWR
(Power) Yellow On Power is supplied to the modem.
ISDN LEDs:
D Green On The ISDN link on the D channel is active.
Blinking The modem is attempting to make a connection to the switch.
B1 On A connection is established to the B1 channel.
B2 On A connection is established to the B2 channel.
AA On The Model XM128 modem is in the automatic answering mode.
CP Blinking An incoming call is ringing.
On Compression is active on either of the B channels.
7847MEA
DTR DSR RTS CTS TD D PWR B1 B2 AA CP
ISDN
RD
1 2
ISDN Digital Modem
INTERFACE
128Kpbs
MODEL XM128 U
COM
2 3 4 1