Digital modems, Digital modems 67 – Enterasys Networks CSX6000 User Manual
Page 67
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
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:
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.
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+).
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.
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