Zhone Technologies IMACS Network Device - Manual (Page 98)

Zhone Technologies, Inc. IMACS Product Book, Version 4
March 2001 Page 94
Bundled Service Deployment
The IP Routing Server is targeted at performing boundary routing functions for access to Internet or Intranet based
services. The standard application for an IMACS in this environment is in bundled service arrangements where the
IMACS is utilized to integrate voice circuits and an Ethernet-based Internet port at the customer location as shown
in Figure 39. The carrier would typically switch the voice circuits to the PSTN via a DACS, while the frame relay-
based data connection from the Ethernet port would be connected to a Frame Relay network for transmission to the
Internet. An external firewall can be used for providing and maintaining security when connected to the Internet.
DACS
Figure 39 – IP Routing Server For Internet or Intranet Based Services
Private Intranet Deployment
A secondary market for the IP Routing Server is private Intranet access. In the application shown in Figure 40, the
IMACS on the left is connected to a private WAN. It has a single connection to a centralized router, which provides
full IP routing functionality. The IMACS on the right has two T1 connections, one to each of the two remote
IMACS, and one connection to the router. Normally, there would be two connections to the router. However, in
this application, the IMACS on the right includes a Frame Relay Server card, which switches both frame relay
streams into the router.
PBX/Key
System
IMACS
T1/E1
PSTN
Frame Relay
Network
IP Network
Router
DACS