ZyXEL Communications PRESTIGE 128MH - Manual (Page 23)

Prestige 128MH PSTN Router/Hub
Getting to Know Your Router/Hub 1-3
PAP and CHAP Security
The Prestige supports PAP (Password Authentication Protocol) and CHAP (Challenge
Handshake Authentication Protocol). CHAP is more secure than PAP; however, PAP is readily
available on more platforms.
DHCP Support
DHCP (Dynamic Host Configuration Protocol) allows the workstations on your LAN to obtain
the configuration from the Prestige at start-up.
Call Control
Your Prestige provides budget management for outgoing calls and maintains a blacklist for
unreachable phone numbers in order to save you the expense of unnecessary charges.
Data Compression
Your Prestige incorporates Stac data compression to speed up data transfer. Stac is the de facto
standard of data compression over PPP links.
Networking Compatibility
Your Prestige is compatible with remote access products from other manufacturers such as
Ascend, Cisco, and 3Com. Furthermore, it supports Microsoft Windows 95 and Windows NT
remote access capability.
1.3 The Built-In Modems
The built-in modems are capable of maximum throughput of 56 Kilobits per second (kbps).
Please note that due to the local telephone regulations and the line quality of your local loop, your
Prestige may or may not achieve the theoretical maximum throughput.
The modems support either K56flex™ or X2™ standard, depending on the modem module
installed in your Prestige. In either case, the modem is firmware upgradable to V.90, which is the
latest international standard sanctioned by the ITU (International Telecommunication Union).
Please visit ZyXEL’s web site at www.zyxel.com for the availability of the firmware upgrade for
your model.