User manual
4300T User Manual Edgewater Networks, Inc.
Version 1.7 26
Change the Administration Password
We strongly recommend that you change the default password for the “root”
administrative account using the following steps:
A. Select System.
B. Select changed in the Change Password
section of the GUI.
C. Enter the New Password.
PLEASE note: the new password must be
between 6 and 20 characters in length. Any
combination of alpha and numeric characters is accepted.
D. Enter the password you chose in step C again in the Confirm Password to
ensure that there were no mistakes in the initial entry.
E. Press Submit.
VoIP Configuration
The 4300T provides a VoIP application layer gateway (ALG) for the SIP, MGCP, H.323
and SCCP protocols. The ALG proxies the connection between the VoIP softswitch or
IP PBX and voice devices such as IP phones, IADs or softphones. By acting as a
proxy the 4300T is able to provide several important functions for IP based voice:
Provide NAT/PAT services for voice traffic. NAT/PAT for VoIP enables you to
use a single public IP address on the WAN interface of the 4300T to represent
multiple private IP addresses assigned to voice devices on the LAN. The NAT
function maps both IP address and IP port number between the public and
private addresses so that all signaling and VoIP media packets are translated.
A single public IP address can support up to 253 voice devices.
Provide security services for voice traffic.
o NAT/PAT services hide enterprise LAN topology from hackers.
o The ALG acts as a “voice aware” firewall and ensures only
authenticated voice traffic enters the enterprise LAN. This is
accomplished by the dynamic provisioning of signaling and media ports
for authenticated voice devices. The implementation is stateful and
open ports are closed automatically when no longer required to
support the voice call.
Enable mobility in the enterprise LAN for voice devices. This is useful, for
example, when using WiFi or moving office locations. In these instances the
IP address of the voice device may be changed.
Configure the VoIP ALG
In order to configure the VoIP ALG the 4300T must be told where to reach the
signaling servers and TFTP server on behalf of the voice devices.
A. Select VoIP ALG.