ZyXEL Communications IES-1248-51 Specifications

The fastest speed with the most
advanced and flexible DSL
transport available, adjustable
speeds for multiple service
offerings down/up stream Up to
24/1.2 Mbps
Application flexibility, with
asymmetric data transport over a
single copper pair (software
configurable)
Compliant with ITU, ANSI and ETSI
standards
POTS/ISDN in overlay mode
Deployment from CO, cabinet or
basement, multi-tenant units/multi-
dwelling units
Hardened ADSL2+
Mini IP DSLAM
ies-1248-51
A complete offering for High bandwidth
asymmetrical services — residential data,
voice, and multiple video channels
Benefits
Better utilization of bandwidth
The IES-1248-51 (DC Power Input) is an IP-based DSLAM that terminates all the ATM circuits and converts
traffic directly to deliver the most popular broadband IP services. It also provides a distinct advantage over
typical ATM-based DSL access system due to the fact that IP is the natural approach for data transmission.
It offers better bandwidth utilization, ease of use, as well as the low-cost advantage. With the highly
compact and temperature-hardened design, simple installation and easy adaptation to local POTS/ISDN
splitter requirements, the IES-1248-51 can be deployed in indoor and outdoor enclosures.
A robust, capable ADSL2+ solution
With this standalone ADSL2+ IP DSLAM, service providers can offer residential and business users access to
high-bandwidth services on demand; such as streaming video, online gaming, multimedia applications
and multiple video channels on a single network connection. The IES-1248-51 also offers medium/small
businesses and home offices IP connectivity, VPNs, VLANs, high-quality video conferencing, long-reach
Ethernet and legacy service interconnection, as well as asymmetric connectivity as fast as 24Mbps. The IES-
1248-51 DSL solution for POTS/ISDN is a sophisticated ADSL2+ device wielding full compliance to existing
standards, the latest DSL technology, compactness, low power consumption, integration with existing
platforms and network managemeability. The combination of a superior line code, modern signal
processing techniques and state-of-the-art ASIC design add up to a compact, energy-saving ADSL2+
modem with excellent performance, transparent backward ADSL/ADSL2 compatibility, robust interference
resistance and flexible configurability.

Service Applications

• A complete service offering bundling data, voice and video services
• Residential: broadband Internet access, streaming audio and video, gaming, high quality video
distribution, VoD, and telecommuting
• Medium and small businesses: IP connectivity, VPNs, VLANs, high quality video conferencing, long reach
Ethernet or legacy service interconnection, asymmetric to 24 Mbps
• Low cost reliable transport for backhauling applications, such as mobile base station connectivity
over ADSL
• VoDSL services, legacy services and WAN interconnection, bridging or routing, VPNs, provided through
appropriate CPE
• Cost-effective broadband access for higher margin services such as VoD, gaming, and multimedia
applications