Evolution of NGN and NGA
scenario in Nepal
Nepal Telecommunications
Authority
Definition
ITU definition
• A packet-based network able to provide
telecommunication services and able to make use of
multiple broadband, QoS-enabled transport technologies
and in which service-related functions are independent
from underlying transport-related technologies
• Enables unfettered access for users to networks and to
competing service providers and/or services of their
choice
• Supports generalized mobility which will allow consistent
and ubiquitous provision of services to users
Evolution of NGN
 Technological advancement in
telecommunications are forcing a trend towards
unifications of networks and services setting up
the stage for the emergence of NGN.
 In NGN multiple access networks can connect
customers to a core networks based on IP
technology.
 IP would permits convergence of services
includes not only data, picture, music, and video
but also voice communication and may be many
other services discover by technologists.
Evolution of NGN
 NGN would be divided into three layers i.e.
Access, Transport, control & applications.
 Different operators would compete with each
other in different layers.
 In NGN the service layers is independent of the
underlying network thus NGN offer opportunity
for third party service providers to develop &
operate services to customers.
 Customers are also not bound to take all
services from only the Access provider in NGN.
Evolution of NGN
• Traffic of different services of data,
television,& subsequently voice would be
simply enclosed in Internet protocol
packets transmitted over these networks.
• Some of the Services offered by NGN
– VoIP, IP Centrex, Interactive learning, Unified
messaging, Games, Multimedia streaming,
etc.
NGN migration strategy*
• Full stream ahead
– Under this strategy operators announced plans to retire their
public switched telecom network. BT, Telecom Australia, NTT &
KPN are in this categories.
• Gradual with narrower scope
– Under this strategy operators can take limited steps towards a
core NGN upgrade. For example by using IP for transport in the
core PSTN .This is a low cost, low risk move. Telecom Italia &
Telia Sonera are in this categories.
• Wait and watch
– Under this strategy Incumbent may choose to postpone any core
NGN program, waiting to see how other operators succeed with
their projects & avoiding the teething problems of early NGN.
*Source: TRAI website
Scenario in Nepal on NGN
• Regulatory preparedness
– A study team has been formed to study various
aspect for implementation of NGN.
– Modality on content regulation is being studied.
– In near future NTA is going to organize one workshop
on NGN so as to solicit suggestions for the steps to
be taken for implementing NGN.
• Operator’s Status
– Among the variety of NGN services, Incumbent
operator is in the process of procuring NGN
equipments.
Way forward for implementing NGN
• There may be risk in migrating to NGN however
the greatest risk is to remain stand still.
• Following issues should be addressed
– Beginning phase wise replacement of the
infrastructure.
– Replacing the obsolete phase out switches and
unsupportive data service switches.
– Partly replacing the infrastructure e.g. local switches
with new infrastructure without forcing all the users to
migrate.
– Beginning with the partial Overlay.
– Reforming the existing network with the maximum
expansion of the optical fibers FTTC, FFTH, 3G
application
Recommendation for NGN
• Regulate content in the context of NGN.
• Have interconnection (tandem) exchange for exchange
of IP traffic in NGN environment.
• Include non-telecom operators in interconnection domain.
• Develop specific NGN standards and develop interface
approval mechanism for NGN equipments to ensure
smooth inter-operability subsequently.
• Modify National Numbering plan to include NGN.
• Continue existing Billing Mechanism for a time being and
in the future, it might be based on capacity, quality and
class of services (bandwidth used) instead of time
(minutes) and distance.
Recommendation for NGN
• Have separate mechanism for traffic measurement to
cover packet traffic.
• Identify the parameters for Quality of Service (QoS)
measurement.
• Frame time schedule to migrate to NGN on consultation
with various service providers.
• Take into consideration security features which will
ensure national harmony.