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SN4554 Getting Started Guide
SN4554 rear panel
The SN4554 is an ISDN BRI PSTN Gateway for home or home-office use that supports two VoIP calls via a
single ISDN BRI port (see
Port
ETH (LAN)
BRI (Line)
5V DC, 1.0A
Reset
SN4554 overview
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figure
2). The SN4554 rear panel ports are described in
Model SN4554
LAN
ETH 0/0
ETH
Ethernet port
Figure 2. SN4554 rear panel
Table 2. Rear panel ports
Switched Auto-MDX Fast-Ethernet port, RJ-45 (see
net Telephony Service Provider (ITSP) [via an xDSL or cable modem] or a remote IP-PBX
[via a private corporate network].
S
ISDN BRI/
port. RJ-45 connector presents the NET (User) side of the
0
(see
figure 2
) for connecting the SN4554 to a PBX NT port or an ISDN BRI NT.
The SN4554 has a 5V DC 1A power input (see
The reset button (see
figure 2
Restart the unit with the current startup configuration—Press (for less than 1 second)
•
and release the Reset button to restart the unit with the current startup configuration.
Restart the unit with factory default configuration—Press the Reset button for
•
5 seconds until the Power LED (see
the unit with factory default configuration.
Restart the unit in bootloader mode (to be used only by trained SN4554 techni-
•
cians)—Starting with the unit powered off, press and hold the Reset button as you
apply power to the unit. Release the Reset button when the Power LED starts blink-
ing so the unit will enter bootloader mode.
Line 1
BRI 0/1
BRI
ISDN Line port
Description
figure 2
figure 2
) has three functions:
figure 3
on page 16) starts blinking to restart
1 • General information
table
2.
Line 0
BRI 0/0
), connect the unit to an Inter-
S/T
interface
).
15
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