Edgewater Networks 4300T Manuel d'utilisateur télécharger pdf (Page 14)

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

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Edgewater Networks 4300T Manuel d'utilisateur Page 14

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