HP ProCurve Secure Router 7203 dl Advanced Management And Configuration Manual page 933

To set up this WAN, ProCurve Retail requires a WAN router at each office:
The Berlin office needs a a ProCurve Secure Router 7203dl with a two-
port E1 module, an ADSL Annex B module, and an octal E1 module. This
router also needs a backup module that is placed over the ADSL module,
and an IPSec VPN module.
The Mannheim office needs a ProCurve Secure Router 7203dl with an
ADSL Annex B module, an S/T ISDN module, and an octal E1 module. This
router also needs a backup module that is placed over the ADSL module.
The Dublin office needs a ProCurve Secure Router 7102dl with a two-port
E1 module and an S/T ISDN module.
The Prague office needs a ProCurve Secure Router 7102dl with a two-port
E1 module and two-port S/T ISDN module.
All the offices will enable the built-in firewall.
Figure 15-2 shows ProCurve Retail's WAN.
ISP
LAN
Dublin
FR/E1
LAN
Figure 15-2. ProCurve Retail's WAN
ISP
Berlin
Mannheim
ISP
LAN
Appendix A: Example Configuration
ISP
LAN
Prague
FR/E1
LAN
LAN
Overview
A-5