Enterasys csx5500 用户指南
Central Site Remote Access Switch 67
H
ARDWARE
O
VERVIEW
System Adapters
D
IGITAL
M
ODEMS
The CyberSWITCH supports the DM-8, DM-24, DM-24+ and DM-30+ Digital Modem adapters.
These adapters allow the CyberSWITCH to receive calls from asynchronous PPP
These adapters allow the CyberSWITCH to receive calls from asynchronous PPP
connected by modem. They also provide a vehicle for
access.
Available Digital Modem adapters include the following type and quantity of modems on a single
adapter card:
adapter card:
The Digital Modems support the following remote modem options:
All modem adapters:
•
•
V.34+
(33.6 Kbps)
•
V.34
(28.8 Kbps)
•
V.32 bis
(from 300 bps to 14.4 kbps)
•
MN4
(with error control)
•
MN5
(with data compression)
•
V.42
(with error control and data compression)
DM-24+ and DM-30+ modem adapters only:
•
•
K56Flex
(56 Kbps)
(firmware may be upgraded to the
standard)
The number of adapters in a system is limited by the number of ISDN channels and adapter slots
available. A maximum of four DM-8s or three DM-24s, DM-24+s, or DM-30+s can be installed and
configured at one time. You may combine DM-8s and DM-24s in the same system as long as you
do not exceed a maximum of three cards.
available. A maximum of four DM-8s or three DM-24s, DM-24+s, or DM-30+s can be installed and
configured at one time. You may combine DM-8s and DM-24s in the same system as long as you
do not exceed a maximum of three cards.
Note:
Digital Modem adapters are also known as DIG-8 (DM-8), DIG-24 (DM-24), DIG-24+ (DM-
24+), and DIG-30+ (DM-30+).
24+), and DIG-30+ (DM-30+).
For the DM-24+ and DM-30+, no “+” follows the Digital Modem adapter designation in
CFGEDIT. Do not be alarmed; in the case of the DM-24 and DM-24+, the system
automatically distinguishes between the two different types of modems.
CFGEDIT. Do not be alarmed; in the case of the DM-24 and DM-24+, the system
automatically distinguishes between the two different types of modems.
DM-8
eight V-34+ (33.6 Kbps) modems
DM-24
twenty-four V-34+ (33.6 Kbps) modems
DM-24+
twenty-four K56Flex (56 Kbps) modems
DM-30+
thirty K56Flex (56 Kbps) modems