Enterasys Networks CSX6000, CSX5500 Digital Modems, With error control, With data compression

HARDWARE OVERVIEW

System Adapters

DIGITAL MODEMS

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 remote devices connected by modem. They also provide a vehicle for remote analog console access.

Available Digital Modem adapters include the following type and quantity of modems on a single adapter card:

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

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 ITU V.90 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.

Central Site Remote Access Switch 67