61202800L1-1B
IQ 710
Section 6, Configuration Guides
Page 147
© 2002 ADTRAN, Inc.
IQ 710 System Manual
BASIC FRAME RELAY DIAL BACKUP BETWEEN MULTIPLE SITES
WITH THE IQ 710
Introduction
The ADTRAN IQ 710 provides disaster recovery protection for Frame Relay circuits. This configuration
guide will describe how to configure dial backup (DBU) between a host site and two remote sites. The
units used in this example are IQ 710s with ISDN BRI DBU and T1/DSX modules.
Before You Begin
For this example, each IQ 710 unit will require an ISDN BRI DBU card (P/N 1204004L2) and a T1/DSX
card (P/N 1202803L1).
Network Description
Figure 1 on page 148 is a diagram of the Frame Relay example network used in this configuration guide. In
this example, the host site is Huntsville. Two Permanent Virtual Circuits (PVCs) originate from Hunts-
ville. One circuit is connected to Atlanta and the other to Birmingham. The two DLCIs used by the host
site to communicate with the remotes are 16 and 17. Atlanta and Birmingham are the two remote sites.
They both use DLCI 20 for communication with Huntsville. Please remember that DLCIs have local sig-
nificance and are assigned by the Telephone Company (TELCO) when the Frame Relay network is built;
therefore the DLCIs for your Frame Relay network will most likely be different from the ones used in this
example.
The remaining parameters described in Figure 1 provide a description of the BRI lines that terminate into
the three IQ 710s. The Telephone Company will provide you with the Local Directory Numbers (LDNs)
and Service Profile Identifiers (SPIDs) for each of your BRI lines. In addition, you must know which type
of Central Office (CO) switch is providing the ISDN service.
