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Product Features

Supports TDM or 
packet networks

Six-slot modular chassis
includes one T1/PRI
Network Interface Module
(NIM), a second NIM
option slot, and four user
option slots

Supports FXS, FXO, E&M
and DSX-1 for PBX or
key systems

Provides integral
DSU/CSUs, multiplexing,
1/0 DACSing, Frame Relay,
PPP, IP routing, ISDN
switching, and intelligent
voice/data call routing

Hot-swappable modules

Management includes:
SNMP, Telnet, and VT100

Integral Frame Relay 
software for access,
concentration, and
switching

Optional Voice Compression
module for Voice over
Frame Relay (VoFR)

Integral 10/100Base-T
Ethernet for Telnet access
and IP routing using PPP
or Frame Relay
Encapsulation

Supports up to 32
analog ports

Industry-leading five-year
North American warranty

The ADTRAN

®

ATLAS

550 is an Integrated

Access Device (IAD) designed to improve 
and lower the costs of voice/data, video,
and Internet communications for enterprise
businesses and network service providers.

With the ATLAS 550, many WAN functions
have now been merged and combined into a
small, economical, modular platform that will 
replace a rack of traditional single function
access devices. With the ATLAS 550, traditional
multiplexed and packet networks are easier to
deploy and manage while providing more
bandwidth efficiency out of existing or new
communications links. The ATLAS 550
provides a new level of communications 
flexibility by offering many of the features
previously found in larger central office, 
PBX, or router equipment. 

The ATLAS 550 chassis includes a high-

speed multi-protocol backplane and six
modular expansion slots: two network inter-
face slots and four user interfaces slots. A wide
range of hot-swappable, industry-standard
modules are also available to effectively
converge your telecommunications and your
existing network systems, such as routers, PBX,
key systems, video conferencing equipment,
remote access servers, LANS, faxes, and tele-
phones. The ATLAS 550 will typically reside 
at a customer site and perform the functions
found in multi-port multiplexers, channel
banks, 1/0 cross connect switches, Frame

Relay Access Devices/concentrators/switches,
IP routers, and ISDN switches. It also includes
an integral voice switchboard and dial plan 
for dynamically and intelligently switching
voice and data calls based on the telephone
number dialed.

ATLAS 550 supports multiple network 

technologies including T1/FT1 DSX-1, ISDN,
FXS, FXO, V.35 and 10/100BaseT Ethernet and
is designed to be used for more cost-effective 
T1, ISDN or Frame Relay networks. With the
modularity of ATLAS 550, users can now
support up to 10 FT1s and run traditional
switched or multiplexed voice/data traffic,
ISDN, or packetized Frame Relay. Users can
also run a hybrid mix of network architectures
that will make it easier to evolve network
systems and applications. For example, using
intelligent call routing and an optional voice
compression module, users can simultane-
ously support toll grade voice calls and
compressed voice over Frame Relay, all
dynamically switched between PBXs, 
key systems, and the public network. 

For configuration and troubleshooting, the

ATLAS 550 includes LEDs for complete opera-
tional status indications, front and rear VT100
craft interfaces for terminal or dial-in access,
alarm contacts, and a 10/100Base-T Ethernet
LAN connection for SNMP and Telnet.

ATLAS 550

Enterprise Integrated Access Device

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