Enterasys csx5500 用户指南
Central Site Remote Access Switch 39
T
HE
C
YBER
SWITCH
Remote ISDN Devices
More detailed descriptions of system software and hardware are included in the next two chapters.
The following section describes remote ISDN devices.
The following section describes remote ISDN devices.
R
EMOTE
ISDN D
EVICES
The CyberSWITCH provides a centralized concentrator function for remote ISDN devices. The
devices can be separated into the following categories:
•
devices can be separated into the following categories:
•
remote ISDN bridge devices
•
PC based terminal adapters
•
ISDN enabled workstations
•
other ISDN routers
Typical remote ISDN bridges provide one Ethernet port and one basic rate ISDN port. The basic
rate port is connected to the switched digital network and is used to make connections to the
CyberSWITCH. The Ethernet port is used to connect to a remote LAN. The remote bridge device
sends Ethernet frames from devices on the remote LAN over the switched network.
rate port is connected to the switched digital network and is used to make connections to the
CyberSWITCH. The Ethernet port is used to connect to a remote LAN. The remote bridge device
sends Ethernet frames from devices on the remote LAN over the switched network.
PC-based terminal adapters connect to a remote personal computer and use the switched digital
network to connect to the system. The terminal adapter sends network protocol specific frames
from the host PC device over the switched network.
network to connect to the system. The terminal adapter sends network protocol specific frames
from the host PC device over the switched network.
Workstation-based terminal adapters connect to a workstation and use the switched digital
network to connect to the system. The terminal adapter sends network protocol specific frames
from the workstation over the switched network.
network to connect to the system. The terminal adapter sends network protocol specific frames
from the workstation over the switched network.