User manual

4300T User Manual Edgewater Networks, Inc.
Version 1.7 14
 Traffic shaping and priority queuing to guarantee high quality voice traffic.
These mechanisms protect voice and data traffic from contending for the
same network resources to guarantee low latency and the highest call quality
possible for VoIP traffic. At the same time they ensure the best utilization of
WAN bandwidth by enabling data traffic to burst up to full line rate in the
absence of voice calls. Precedence is automatically given to traffic coming
from IP phones and other devices using the 4300T’s Application Layer
Gateway function.
 NAT/PAT translation for IP phones and PC’s. This allows a single IP address
to be used on the WAN link to represent all of the private IP addresses
assigned to the LAN IP phones and PC’s.
 A “VoIP” aware firewall. A full layer 7 gateway for voice traffic and a stateful
packet inspection firewall for data traffic.
 Call Admission Control (CAC). CAC uses a deterministic algorithm to decide
when there are insufficient network resources available to adequately support
new calls and then return the equivalent of a “fast busy” to new call requests.
 DHCP server and TFTP relay. These features are used to simplify and
expedite the IP configuration of phones and PC’s. This also includes VoIP
signaling gateway information (MGCP, SIP, H.323 and SCCP).
 Call quality monitoring and test tools.
 VoIP survivability. Provides call switching to an LAN based PSTN gateway
during WAN outages.
Configuration Outline
Task
Subtask
Configure For Station
Side IP PBX Application?
System Configuration
configure LAN/WAN interface
Yes
set ethernet link rate
Optional
enable the DHCP server
Optional but recommended
configure SNMP
Optional
VoIP Configuration
enable the VoIP ALG
Yes
configure a VoIP subnet route
Optional
Data Networking Configuration
dynamic NAT
Optional but recommended
static NAT
Optional
static IP routing
Optional
Firewall Configuration
enable the data firewall
Yes
configure basic settings
Optional
configure advanced settings
Optional
Traffic Management Configuration
enable traffic shaping
Yes
enable Call Admission Control
Optional
VoIP Survivability
enable VoIP survivability
Yes
configure call processing server reachability
settings
Optional
specify the number of digits to use for local dialing
Optional
configure the IP address of the local LAN side
PSTN gateway
Optional
configure call processing server redundancy
Optional