Digital Modem; Management - Cabletron Systems SmartSwitch 9W006 User Manual

The 9W006-220 (the 9W006 with two PRI interfaces and two digital modem interfaces) allows
channelized T1 service with robbed-bit signaling for users wanting to support analog modem calls
without concurrent ISDN support.
D M
IGITAL ODEM
The module's digital modem capability allows analog modems to be intermixed with ISDN as
required to best fit specific user situations.
Up to sixty 56Kbps digital modem connections are supported. The digital modem is connected
internally to the telco interface (ISDN PRI or channelized T1) eliminating the need for separate
analog telco connections.
When the modules identify that a call is coming from an analog modem, the associated ISDN B-
channel or channelized T1 SD0 data stream is then assigned to one of the digital modems. All of the
operations of a 56Kbps modem are performed just as if the call had gone to an analog modem
through an analog phone line (although at the higher speeds available with digital modem
technology).
Similarly, data coming into the modules (typically from the LAN) is converted to Async-PPP, sent
to the digital modem for modulation, and sent out the ISDN B-channel or T1 DS0 on the telco line.
The K56flex digital modem protocol provides automatic rate detection/negotiation such that lower
baud rates are fully supported. The digital modem also supports MNP4 and V.42 error control
protocols, and MNP5 and V.42bis data compression protocols.
M
ANAGEMENT
The SmartSwitch Remote Access Module includes SFVRA-CFG, a management software with
flexible bandwidth management designed to keep performance up and cost down. Network
managers can configure a variety of parameters to control connections being established and
terminated including restrictions by packet type, time of day, and maximum calls per day.
The management capabilities included allow great flexibility. Each B channel can be used to
connect to one or more single remote locations, or through inverse multiplexing higher bandwidth
can be provided to users in multiples of 64Kbps.
Users can also configure the modules to sense data traffic needs and automatically initiate or
terminate calls. This provides bandwidth-on-demand resulting in high performance with minimal
associated cost. The management of these calls is extremely important for minimizing ISDN phone
charges.
Remote management capabilities are also supported for centralized administration of
decentralized networks including the use of standards such as SNMP and Telnet.
The 9W006 and 9W007 modules provide numerous network management features. Internally, Call
Detail Recording will log data to a local file. Using Syslog users can capture essential data regarding
remote users connection time. Also supported is Telnet with password, host and terminal server as
well as tftp for the ability to upload and download log files. CDR files provide tracking and
T S S R
HE MART WITCH EMOTE
9W006 and 9W007 Functionality
9W006 and 9W007
A M
CCESS ODULE
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