Adtran 4120 ユーザーズマニュアル
Chapter 1. Understanding ISDN and the Express 4110/4120
1-10
Express 4110/4120 User Manual
61200176L3-1
4.
Network Address Translation (NAT):
Single networks can connect to
the Internet with this function. The Express 4110/4120 translates out-
going IP packets over the ISDN to the IP router at the Internet Service
Provider. Popular Internet applications are supported.
going IP packets over the ISDN to the IP router at the Internet Service
Provider. Popular Internet applications are supported.
5.
POTS:
The POTS interfaces can be used for interfacing to dual tone
multi-frequency (DTMF) analog devices such as telephones, modems,
fax machines, etc.
fax machines, etc.
Demand Routing and Bridging with the Express 4110/4120
The Express 4110/4120 is a dial-up ISDN IP Router and Transparent
Learning Bridge that provides Dial-On-Demand and Dynamic Bandwidth
Management. Its features can be easily configured and used once several
basic concepts are understood.
Learning Bridge that provides Dial-On-Demand and Dynamic Bandwidth
Management. Its features can be easily configured and used once several
basic concepts are understood.
Factory Default
The Express 4110/4120 comes from the factory configured for MAC
Bridging, IP routing, and IPX routing with no filters or connection infor-
mation defined. An IP address of 10.0.0.1 with a network mask of
255.255.255.0 is preloaded. Dynamic Bandwidth Management features are
disabled. Although dynamic assignment of a B-channel for the analog
(POTS) ports on the Express 4110/4120 is always available, link idle time-
out and adding/removing of B-channels based on traffic is initially dis-
abled.
Bridging, IP routing, and IPX routing with no filters or connection infor-
mation defined. An IP address of 10.0.0.1 with a network mask of
255.255.255.0 is preloaded. Dynamic Bandwidth Management features are
disabled. Although dynamic assignment of a B-channel for the analog
(POTS) ports on the Express 4110/4120 is always available, link idle time-
out and adding/removing of B-channels based on traffic is initially dis-
abled.