The Alcatel 3630 MainStreet PRM offers many applications, 
including:
> Voice, data, and integrated voice and data networking 
> Point-to-point and drop/insert applications 
> Superrate operation, providing connectivity for video
conferencing, interconnecting LANs over the WAN
> Leased bandwidth delivery in the local loop
Alcatel 3612 MainStreet Narrowband Multiplexer 
Designed to maximize bandwidth 
efficiency, the Alcatel 3612 
MainStreet Narrowband
Multiplexer (NBM) reduces 
networking costs while delivering high-performance services 
that are required for today’s business applications. It manages 
expensive access link bandwidth through the use of voice 
compression, which provides high quality at very low bit rates, 
as well as frame relay switching and encapsulation. It also 
offers subrate multiplexing features to further improve 
bandwidth utilization. 
The system can support various combinations of voice and 
high/low speed data, including connections from LAN routers 
and up to 24 analog or digital connections. Maximum 
bandwidth efficiency is realized with dynamic bandwidth 
allocation by sharing bandwidth on demand between voice, 
fax and data.
Alcatel 3612 MainStreet NBM highlights:
> Bandwidth savings through efficient multiplexing of voice,
fax and data over leased line, frame relay and ISDN services 
from remote locations
> Highly flexible access feeder to multiservice networks 
> Central hub for smaller star networks or point-to-point
applications
> Combination of LAN, legacy data (Async, X.25, SNA, etc.)
and voice over frame relay (VoFR) enables substantial 
bandwidth savings and performance improvements across 
the WAN
> Use of sophisticated low bit rate voice compression
techniques delivers high-quality voice (and fax) 
communications while minimizing use of costly bandwidth
> Encapsulation into frame relay of PBX CCS signaling
protocols provides significant bandwidth savings and 
provides PBX feature transparency
> Automatic aggregate protection of leased lines over the
switched ISDN network negates the need for expensive, 
and often idle, alternate bandwidth for rerouting. 
> Flexible ISDN features allow provision of temporary
switched connections for disaster recovery applications
Network Termination Units (NTUs)
Alcatel 2902 MainStreet Network Termination Unit 
The Alcatel 2902 MainStreet 
Network Termination Unit
(NTU) delivers managed 
bandwidth access of up to 2 Mb/s over existing copper pairs 
(HDSL) or E1 facilities. Within a single unit, service providers 
can deliver integrated data and digital voice access with a 
high degree of flexibility and reliability, while making use of 
existing network infrastructure.
The Alcatel 2902 MainStreet NTU can be configured to deliver 
n*64 kb/s to 2 Mb/s voice and data services over two regular 
twisted copper pairs up to 5 kilometers (3.1 miles), without 
requiring repeaters. 
The Alcatel 2902 MainStreet NTU allows service providers 
to multiplex data, router and LAN hub traffic into a single, 
versatile gateway. It provides a flexible, cost-effective way 
to integrate digital voice and data traffic from a business site 
onto a high speed E1 digital link for customer access to public 
or private networks, or for point-to-point operation.
MainStreet Business Access Portfolio
> 24 ALCATEL TECHNICAL INFORMATION GUIDE