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DCL
RELEASES STREAM CONTROL TRANSMISSION PROTOCOL SOURCE CODE
Data Connection Limited (DCL) added support for Stream Control
Transmission Protocol (SCTP) to its source code product suite for
network equipment manufacturers.
SCTP is a new IP transport protocol, developed by the
SIGTRAN working group of the IETF, designed to replace the
existing UDP and TCP transports.
The new protocol is expected to provide a number of
significant advantages over the existing protocols in the areas of
data transfer, handling congestion and packet loss and security.
It has been specifically optimized for carrying signaling
protocols, such as when SS7, ISDN or Megaco are carried over IP.
The new DC-SCTP product provides OEMs with portable source
code for use in devices running SCTP for a variety of
applications, such as Call Agents, SoftSwitches, and Residential
and Trunking gateways. The protocol could also be used for
transportation of other transaction-based protocols (such as HTTP)
in scenarios requiring networking fault tolerance through
protocol-level support for multihoming, and enhanced security
protection from Denial of Service attacks.
The source code integrates with DCL’s existing ATM, MPLS,
MGCP/Megaco, SS7 and other converged network software.
http://www.dataconnection.com/
Data Connection Limited (DCL), October 27, 2000
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SCTP
is designed to transport PSTN signaling messages over IP
networks and addresses limitations in TCP. Key features of
SCTP are expected to include: acknowledged error-free
non-duplicated transfer of user data; data fragmentation to
conform to discovered path MTU size; sequenced delivery of
user messages within multiple streams, with an option for
order-of-arrival delivery of individual user messages;
optional bundling of multiple user messages into a single SCTP
packet; and network-level fault tolerance through supporting
of multi-homing at either or both ends of an association.
More information, including current Internet drafts and
a discussion mailing list, are available from the IETF
"Signaling Transport" (sigtran) Working Group:
http://www.ietf.org/html.charters/sigtran-charter.html
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The
first interoperability tests of Stream Control Transmission
Protocol (SCTP) were held in June at Siemens' laboratories in
Munich.
AVAIL
NETWORKS UNVEILS INTEGRATED CONCENTRATOR COMBINING DSLAMS, IADS
AND ATM SWITCHING
Avail
Networks, a start-up based in Ann Arbor, Michigan, introduced a
new customer-located platform that combines key features of
compact DSLAMs, IADs and ATM switches.
The new Frontera 2000 Integrated Concentration Devices,
which are designed for multi-tenant unit (MTU) deployment, can
connect both subscriber (tenant) DSL and traditional telephony
equipment via in-building copper pairs.
Avail’s ICD packetizes and/or switches the voice and data
traffic through a hardware ATM switch to T1/E1, T3/E3, or OC-3
uplinks for local loop connectivity.
The ICD also performs bi-directional traffic policing
functions, preserving QoS across different traffic types even in
over-subscribed in-building access networks.
The Frontera concentrator support packet voice services
(such as AAL2 VoDSL) and can interoperate with ATM-based IADs.
http://www.availnetworks.com
Avail
Networks, October 30, 2000
- Avail Networks was founded by
former employees of the Network Express division of Cabletron
Systems.
VIRATA
RELEASES OPENDSL SOFTWARE FOR AUTOCONFIGURING CPE
Virata
introduced a CPE (customer premise equipment) autoconfiguration
capability required for use by the OpenDSL initiative.
The software will
enable CPE to automatically configure itself by downloading a
software image and provisioning information from an intelligent
DSLAM, switch or router, thereby eliminating truck rolls and
speeding service activation.
The software runs on existing and future Virata product
designs, including its flagship Helium processor.
http://www.virata.com/cgi-bin/frame.pl?URL=/news/pr/dslsoftware.htm
Virata,
October 27, 2000
- OpenDSL is an industry-wide
initiative to develop an open plug-n-play architecture for
retail-grade CPE interoperability and automated configuration.
http://www.opendsl.org
KOREA
TELECOM EXPANDS DEPLOYMENT OF UNISPHERE’S EDGE ROUTING SWITCH
Korea Telecom
will deploy Unisphere Networks’ ERX-1400 Edge Routing Switch
with Subscriber Access features to terminate DSL connections.
The order expands on an earlier installation of
Unisphere’s edge routing switches.
Korea Telecom is targeting rollout of more than 1.6 million
DSL connections this year. http://www.kt.co.kr/english/
http://www.unispherenetworks.com
Unisphere
Networks, October 29, 2000
AFC
SIGNS NEW AGREEMENTS WITH SBC, VERIZON
Advanced Fibre
Communications announced a new contract with SBC Communications
naming it as one the suppliers of DSL-ready remote access
equipment for the carrier’s $6 billion Project Pronto
initiative. AFC will provide SBC with its DMAX1120 and EMAXplus
multi-service access platforms, as well as AFC's environmentally
hardened 240D and 672D outside plant cabinets.
The agreement also includes deployment of AFC's services to
states in SBC's Ameritech region such as Illinois, Michigan, Ohio,
and Wisconsin, adding to existing services provided to SBC in
Arkansas, California, Connecticut, Kansas, Missouri, Nevada,
Oklahoma and Texas.
Earlier
last week, AFC announced a new three-year contract with Verizon to
supply its EMAXplus narrowband and broadband-enabling retrofit
kits, which would eliminate the need to replace some existing
cabinets and other outside plant equipment.
http://www.afc.com
Advanced Fibre
Communications, October 26, 2000
HARMONYCOM
RAISES $25 MILLION FOR ITS BROADBAND SERVICE MANAGEMENT SOFTWARE
HarmonyCom, a start-up based in Ann Arbor, Michigan,
secured $25 million in third round funding to support its
broadband service delivery software.
The product allows service providers to automate the
delivery of data services. HarmonyCom
plans to use the funds to boost its sales and marketing efforts
across Europe and North America. Investors include Cisco Systems,
ComSor Investment Fund, Iscal Holdings, Pino Venture Partners,
Yozma Venture Capital, Draper Fisher Jurvetson ePlanet, Genesis
Partners and an undisclosed large customer care and billing
company. http://www.harmonycom.com
HarmonyCom, October 26, 2000
ACCELERATED
NETWORKS UNVEILS ISDN VOICE OVER BROADBAND SOLUTION
Accelerated
Networks enhanced its broadband voice gateway family with the
introduction of three new integrated access devices (IADs) and
international service capabilities that could be used to deliver
toll-quality ISDN voice and high-speed data services, including
frame relay over DSL (FRoDSL), to business customers.
The ISDN telephony support is compliant to Euro-ISDN and
most other international ISDN standards variations. All IADs
feature customer-side ISDN and high-speed data connections to
support customer PBXs and data traffic, including Ethernet, frame
relay and HDLC services. They are interoperable with ATM network
access equipment. The
products are currently in European field trials with competitive
service providers. http://www.acceleratednetworks.com
Accelerated Networks, October 26, 2000
BROCADE
INTRODUCES 64-PORT FIBRE CHANNEL SWITCHES, OUTLINES PRODUCT
ROADMAP
Brocade
Communications Systems will introduce a 64-port Fibre Channel
switch in Q1 2001.
The design uses six switching modules, allowing the customer to
“pay as you grow” and
scale storage environments as needed.
Brocade plans to extend its storage networking model
further to deliver 128-port networkable "Core" Fibre
Channel fabric switches and 2 Gbps speeds.
The company will also implement interswitch link
"trunking" which will enable logical port grouping to
support switch-to-switch network interconnection speeds of up to 8
Gbps. http://www.Brocade.com
Brocade Communications Systems, October 27, 2000
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