|International Telecommunication Union
For immediate release
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ITU enables modem support in Next Generation Networks
users guaranteed QoS in Packet Based Networks
Geneva, 17 January 2003 — New
technology that will extend the viability of modems has been approved by ITU.
Dial-up access continues to be the primary means of access to online services.
And its continued support in communications networks is imperative for this
reason. Many millions of people have no access to broadband connections, either
because they cannot afford them or because the facility is not available. Modems
are also used in enterprises for a variety of purposes including remote system
administration, access to some specialized services, and communication with
systems that cannot be accessed via the Internet.
Modem over IP (MoIP) technology ensures that as networks move
to a ‘pure IP’ infrastructure they will still be able to efficiently handle
calls generated by modems. And it will give network providers the ability to
deploy with confidence IP access Gateways that will provide full coverage for
all types of traffic.
The challenge has been to create a standard that will allow IP
network operators to support dial-up modem calls. Modems are much more sensitive
than voice to IP network impairments such as delay, jitter and packet loss, and
may fall back to slower rates or even disconnect when encountering the
variability of IP networks. The one per cent packet-loss that can often be found
in IP networks could significantly downgrade the effectiveness of this popular
method of accessing online services.
The new standards will enable network providers to maximize
network efficiency and reliability while giving modem users the ability to carry
on using their modems to the full extent of their capabilities on both circuit
switched as well as packet networks.
Keith Chu, chairman of the technical group responsible for the
specification, called Working Party 1 of ITU-T Study Group 16: "For
end-users, MoIP will mean that as operators migrate to packet based networks,
they will be able to continue to use their dial-up modems with the same quality
of service that they enjoy today. And importantly they will be unaware of any
change", said Chu.
"Completion of this Recommendation by the ITU-T is the
first coordinated approach to addressing this issue, and it allows manufacturers
to offer interoperable IP access gateways in a competitive market and gives
operators a wider choice of equipment to choose from," he added.
The two ITU-T Recommendations that deal with MoIP are V.150.0
and V.150.1. They were created in response to industry demand for consensus on a
modem access protocol for IP networks. Modem access in IP networks is not a new
idea, but up until now there has been no standard protocol for doing this. As a
result, the access options available to users have been limited. ITU-T’s work
will ensure that standardized solutions are available to network operators.
Competition should also ensure that prices stay low. A widely adopted standard
will benefit vendors, service providers and end users alike.
For more information please contact:
Mr Mike Buckley
PR Officer ITU-T Study Group 16
Mr Keith Chu
Rapporteur Question 11
Working Party 1, ITU-T Study Group 16
Tel: +1 949 483 4121
Mr Simao Ferraz de Campos Neto
ITU-T Study Group 16
Tel: +41 22 730 6805
Fax: +41 22 730 5853