OVERVIEW
Digital Modem Network Modules
for the Cisco 3600 Platform
Introduction
1. Note: These digital modem network modules must operate in conjunction with a
TI/EI/PRI/BRI network module. For details on supported PRI network modules, see
the “Technical Specifications” section.
The Cisco 3600 Series is a family of modular, multifunction access
routers for medium and large-sized offices and smaller Internet
Service Providers. With over 70 modular interface options, the Cisco
3600 family provides solutions for voice/data integration, virtual
private networks (VPNs) dial access, and multiprotocol data routing.
Using Cisco’s Voice/Fax network modules, the Cisco 3600 Series
allows customers to consolidate voice, fax, and data traffic on a
single network infrastructure. The high-performance, modular
architecture of the Cisco 3600 Series protects customers’ investment
in network technology and integrates the functions of several devices
into a single, manageable solution.
Now, with this announcement of the new digital modem
network modules, the Cisco 3600 expands its role as a multifunction,
branch/enterprise orientated platform that, supports voice over data,
dial access and LAN-to-LAN or routing in one modular platform,
making it an ideal solution for the “power branch” environment.
Features at a Glance
• Up to 30 digital modems per 3620
The following network modules are being announced:
• Up to 60 digital modems per 3640
Table 1
• Up to 120 digital modems in a 3660
• Network module requires one slot in a Cisco 3600
• Each network module supports up to 30 digital modems
• Each modem is fully software upgradable
• Speeds up to 56 kbps (V.90) are supported
• The number of modems per chassis can be easily increased on site
• LEDs indicate when the network module is enabled/modem banks
are in use
1
Product
NM-6DM
Product Description
6 digital modem network module
12 digital modem network module
18 digital modem network module
24 digital modem network module
30 digital modem network module
NM-12DM
NM-18DM
NM-24DM
NM-30DM
MICA-6MOD
6 digital modem upgrade card for the Cisco 3600 digital
modem network modules
• PRI, BRI, CT1, and R2 support
• V.110 support
MMTL-3600
Managed Modem Software License (available in blocks
of 6 modems)
• Dial-out and Fax-out capable
Copyright © 1998 Cisco Systems, Inc. All Rights Reserved.
Page 1 of 5
Utilizing TACACS+, Challenge Handshake Authentication
Protocol/Password Authentication Protocol (CHAP/PAP), 56-bit
Data Encryption Standard (DES) encryption and the built-in firewall
capabilities of the Cisco 3600 allows secure access for remote users
to sensitive company data.
Digital Modem Applications
Historically, branch office connectivity has been synonymous with
connecting the local LAN to a regional or central site. With the rapid
growth in mobile computing and telecommuting, more and more
branch offices need to add user-to-LAN capabilities.
Using ISDN PRI, ISDN BRI or Fast Ethernet/ISDN PRI, and
digital modem network modules, the Cisco 3600 provides the ideal
functionality for the branch and enterprise offices.
Life Cycle-Focused Support Solutions
Cisco’s comprehensive support portfolio delivers solutions
that enhance the network throughout its life cycle. From design and
installation, to preventive and scheduled maintenance, to performance
optimization, Cisco’s solutions promote network reliability,
efficiency, and flexibility. Designed to function as an integral product
component, these programs deliver seamless support. Together, they
proactively help organizations sharpen their competitive edge.
Through access to the Cisco Connection Online (CCO) Web site,
customers can both use and market expanded functionality and new
features as soon as they become available. Moreover, access to Cisco’s
technical expertise is available around the clock and around the globe.
This virtual team of the world’s top networking engineers is equipped
to address every need from troubleshooting to network design
and planning.
Figure 1 illustrates a typical application for the ISDN PRI and
digital modem network modules.
For basic telephone users, both 33.6K and 56K modem calls
can be terminated through a PRI/BRI connection into a digital
modem network module, including mobile workers and people
working from hotel rooms. For teleworkers with access to Basic
Rate Interface (BRI), the same phone number could be used to
connect to the same Cisco 3600, achieving 64 kbps non-compressed,
or with multilink PPP, 128 kbps.
Multiple backhaul options are available to link back to
a corporate network, at speeds up to 8 Mbps. Additionally, a slower
speed (T1 or Frame Relay, for example) connection could link the
branch to the World Wide Web.
Figure 1
Telecommuter
ISDN BRI*
PRI, BRI,
CT1, or R2
Cisco 3600
Branch Office
Modem
Features:
Dial-Out
• Up to 30 digital modems
in a Cisco 3620
Frame Relay
• Bulletin Board
• Internet
• Up to 60 digital modems in
X.25
a Cisco 3640
Leased Line
• Remote user applications
• PRI, BRI, CT1, and R2 support
Backhaul
HQ
*PRI only
Copyright © 1998 Cisco Systems, Inc. All Rights Reserved.
Page 3 of 5
Orderability, Availability, Software Requirements, Memory Requirements
Minimum Cisco IOS
Version
Product
NM-6DM
Orderable
October 1997
October 1997
October 1997
October 1997
October 1997
October 1997
Available
October 1997
October 1997
October 1997
October 1997
October 1997
October 1997
11.2 (9) XA
11.2 (9) XA
11.2 (9) XA
11.2 (9) XA
11.2 (9) XA
11.2 (9) XA
NM-12DM
NM-18DM
NM-24DM
NM-30DM
MICA-6MOD
Orderability, Availability, Software Requirements, Memory Requirements
Minimum Cisco IOS
Version
Product
Orderable
Available
MMTL-3600
October 1997
October 1997
11.2 (9) XA
Memory requirements for the each digital modem network module
include:
• Bell 103 at 300 bps
• ITU V.21 at 300 bps
• 300 KB main memory
• ITU V.22 at 1200 bps
• Bell 212A at 1200 bps
• ITU V.22bis at 2400 bps
• ITU V.32 up to 9600 bps
• 200 KB input/output (I/O) memory
Ordering Information
Product
Number
Product Description
• ITU V.32bis up to 14,400 bps
• V.32 turbo up to 19,200 bps
• V.34 up to 33,600 bps
NM-6DM
6 digital modem network module
12 digital modem network module
18 digital modem network module
24 digital modem network module
30 digital modem network module
NM-12DM
NM-18DM
NM-24DM
NM-30DM
MICA-6MOD
Error correcting link access protocols:
V.42 LAPM, MNP 2-4
6 digital modem upgrade card for the Cisco 3600
digital modem network modules
Compression protocols:
MMTL-3600
Managed Modem Software License (per 6 modems)
V.42bis (includes MNP-5)
Supported Configurations
• Cisco 3620—one digital modem network module
Upgradability:
• Cisco 3640—two digital modem network modules
• Cisco 3660--four digital modem network modules
Software upgradable to future modem and fax standards.
Modem Management (optional)
Technical Specifications
This option provides for modem statistics, real-time
call-in-progress, monitoring modem activity log, and modem hard/
soft busy out. For further details, reference the digital modem
management document support.
Physical Characteristics
• Six modems per modem module
• Up to five modem modules per network module
Modem Protocols Supported
Requirements
Carrier protocols:
Operates in conjunction with the following network modules,
operating in PRI, BRI (requires IOS 12.0(2)XC or higher), R2
(requires IOS 12.0(1)T or higher) and CT1 mode:
• NM-1CT1
• V.90 (requires Portware 2.5.1.0 and IOS 11.(2)16P or
IOS 11.3.(6)T or higher.)
• K56Flex
• V.110 support
• ITU V.23 at 75/1200 bps
• NM-1CT1-CSU
Copyright © 1998 Cisco Systems, Inc. All Rights Reserved.
Page 4 of 5
• NM-2CT1
servers, the ISDN consolidation market (eight PRI or 48 BRI), the
mid-density analog modem market, and the mid-density hybrid
market (30-120 digital modems), all utilizing a high-performance
routing engine.
• NM-2CT1-CSU
• NM-1CE1B
• NM-1CE1U
• NM-2CE1B
Summary
• NM-2CE1U
The Cisco 3600 is a multifunction platform, with the ability
• NM-4B-S/T or U
• NM-8B-S/T or U
• NM-1FE1CT1
• NM-1FE1CT1-CSU
• NM-1FE2CT1
• NM-1FE2CT1-CSU
• NM-1FE1CE1B
• NM-1FE1CE1U
• NM-1FE2CE1B
• NM-1FE2CE1U
to support dial access, LAN-to-LAN routing, and multiservice
functions in the same chassis. The benefits of this multifunction
positioning include modularity, scalability, investment protection,
and flexibility. The Cisco 36000 multifunction platform is the Swiss
army knife of routers, directly addressing the many varied needs of
the power branch environment.
Positioning
The Cisco 3600 expands the Cisco dial product line, now
with products from the Cisco 2509-12 series, through the
Cisco 3600 series, to the Cisco 5X00 series, making up a broad
range of dial solutions targeted at different market segments,
including small branch, enterprise, ISPs, telcos, and carriers.
Other dial-focused network modules of the Cisco 3600
include 16 and 32 port high-density async network modules,
ISDN network modules, eight and 16 port analog modem
network. These modules address the high-density async market
(up to 192 async ports) for external modems banks and terminal
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