User`s guide

PassFinder AP2520 VoIP Router/Gateway Operation Manual Version 1.10 / Mar. 2002

AddPac Technology Co., Ltd. -

14 -

Internet

Bra n c h A

AP2520 VoIP

Bra nc h B

Remote Management

ADSL

Cable

HDLC, PPP

Fax

PBX

PSTN

Fax

PSTN

E1/T1

PBX

E1/T1

HDLC, PPP

Infranet

[ Diagram 1-2 Network Using PassFinder AP2520 VoIP Router ]

The DHCP(Dynamic Host Configuration Protocol) function automatically assigns

IP addresses to lower level network clients, and uses NAT(Network Address

Translation) to prevent IP address depletion while hiding internal IP addresses

which also adds to the network security.