Internet Telephony in India Status & Issues V K Agarwal Dy. Advisor(Converged Networks) Telecom...
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Transcript of Internet Telephony in India Status & Issues V K Agarwal Dy. Advisor(Converged Networks) Telecom...
Internet Telephony in IndiaStatus & Issues
V K AgarwalDy. Advisor(Converged Networks)
Telecom Regulatory Authority of India
1
1st April 2002 - Internet telephony opened in India
Only then existing ISPs were allowed to provide
Internet telephony
Presently following are permitted, to provide Internet
Telephony service. CMSPs : unrestricted (yet to be started)
UASPs : unrestricted (yet to be started)
BSOs : unrestricted (yet to be started)
ISPs : restricted
Internet Telephony :Present Status0
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Internet Telephony :Present Status (contd.)
ISPs permitted to provide Internet Telephony services
through public Internet by use of Personal Computer
(PC) or IP based Customer Premises Equipments
(CPE) connecting the following : PC to PC; within or outside India
PC / a device / Adapter conforming to standard of any
international agencies like- ITU or IETF etc. in India to
PSTN/PLMN abroad.
Any device / Adapter conforming to standards of
International agencies like ITU, IETF etc. connected to
ISP node with static IP address to similar device /
Adapter; within or outside India.
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Voice communication to and from a telephone connected
to PSTN/PLMN and following E.164 numbering prohibited
in India
Addressing scheme for Internet Telephony shall only
conform to IP addressing Scheme of Internet Assigned
Numbers Authority (IANA) exclusive of National
Numbering Scheme / plan applicable to subscribers of
Basic / Cellular Telephone service. Translation of E.164
number / private number to IP address allotted to any
device and vice versa, by the licensee to show compliance
with IANA numbering scheme is not permitted.
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Internet Telephony :Present Status (contd.)
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Internet Telephony :Present Status (contd.)
ISPs not permitted to establishing voice connection to any Public Switched Network in India
ISP nodes not permitted to use Dial up lines with outward dialing facility
No. of ISPs who are providing Internet Telephony – 32 (out of a total 164 operational ISPs)
Per minute tariff for an international call on average : Rs. 1.00 – 5.00 (in comparison to Rs. 5 – 15 by ILDOs)
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VoIP: Growth in India0
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VOIP- REGULATORY ISSUES
Main VoIP specific regulatory issues are as follows: Interconnection Numbering Emergency Number Dialing Lawful Interception and Monitoring Interoperability and Standardization QoS
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INTERCONNECTION
Charging mechanism Interconnecting parties
Telecom service providers or content provider including web based software led service provider
New advanced services based on IP protocol may require interconnection rights
IP Interconnection Exchange IP based Interconnection Exchange may be one of
the solution for making interconnection smoother and transparent to operators .
Problem of seeker and provider can be overcome
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INTERCONNECTIONUPCOMING SCENARIO
EMERGENCY NUMBER CALLING
Accurate identification of geographical location of VoIP
subscriber is limited by nomadic nature of IP based network
Routing emergency services call to appropriate
geographically decentralized emergency service centers and
provide them with appropriate location information
Internationally very few countries till now has mandated the
emergency number calling
Information to customer regarding unavailability of
emergency number calling is important before the user
subscribes to the service.
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NUMBERING
TDM voice service providers presently use E.164 numbering
as stipulated by Numbering plan
VoIP subscriber may also require suitable address such as
E.164 number specifically for receiving incoming calls from
PSTN/PLMN networks
Whether dedicated, geographical/ non-geographical numbers
Other type of addressing such as IP address, SIP ID or URL
are not user friendly and hence not in much of use.
End user devices required in such scenario are costly
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LAWFUL INTERCEPTION Lawful interception and Monitoring is necessary for security
and integrity of the state
Use of advance encoding & encryption techniques by service
providers can pose challenge to Lawful Interception and
Monitoring by security agencies The encryption level user by service providers therefore may
be restricted to a certain level 40 bit encryption is presently being allowed to internet service
providers in India. If higher encryption is used then the relevant encryption key is
to be made available to authority in advance.
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INTEROPERABILITY AND
STANDARDIZATION Interoperability and standardization is critical to retail telecom
markets for avoiding any delay in the introduction of new services
Presently available customer premises devices are being provided by using standard international protocols only.
Ensuring interoperability between VoIP based network and legacy network is of prime importance to improve the quality of VoIP services
Interoperability may significantly help reduction in price of end user equipments.
However mandate on interoperability and standardization will add on the project implementation costs
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QUALITY OF SERVICE
Present pattern of measuring and monitoring a defined set of QoS indicators established may not be applicable for VoIP services
Voice Quality in VoIP has improved due to advanced coding techniques and has considered to be equivalent to carrier grade voice quality
The need for survival of VoIP service provider in competitive telecom market will force them to offer the good Voice quality
Mandating QoS may impact on cost advantage due to VoIP carriage on unmanaged Internet environment as generally done by service providers
It may be required that service providers allow consumers to make informed choices based on information provided by service providers
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Internet Telephony :TRAI’s Recommendations
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Way Forward
International trends suggest VoIP will happen anyway VoIP is good for consumers
• Cost effective, nomadic and other features Internet Telephony may become driver for bridging the
digital divide. Opening of VoIP may drive broadband take up
Extension of fruits of technology to users in cost effective and user friendly manner is need of hour
IP telephony will drive innovation move from current distance/ time based tariffs to flat rate
bundled tariffs
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