ZyXEL Communications Prestige 480 User Manual page 141

Prestige 480 Dual BRI ISDN Router
Services
FTP (File Transfer Protocol)
Telnet
SMTP (Simple Mail Transfer Protocol)
DNS(Domain Name System)
HTTP (Hyper Text Transfer protocol or WWW, Web)
PPTP (Point-to-Point Tunneling Protocol)
Dial-In Server Configuration
Port Number
21
23
25
53
80
1723
8-19