What is INMARSAT?
INMARSAT (International Maritime Satellite Organisation) operates a
constellation of geostationary satellites designed to extend phone, fax and data
communications all over the world.
The constellation comprises five thirdgeneration satellites backed up by four
The INMARSAT System primarily consists of the following essential components:
· The Inmarsat Network of Satellites, one each in each Ocean Region, IOR, POR,
AOR (E) and AOR (W) with one backup and four earlier satellites.
· The Land Earth Stations (LES), which provide an interface between the space
segment and the national & international fixed telecommunication networks.
· The Mobile Earth Stations (MES), which are the satellite communication
terminals used by the user.
· Satellite Control Centres at Inmarsat Headquarters
a. NOC Network Operation Centre
b. SCC Satellite Control Centre
Who can apply for use of INMARSAT service?
Where to apply for No Objection Certificate?
What is the policy in this regard?
1. Any individual/ public/ private sector companies/ autonomous bodies/
Government departments etc. can apply for issue of No Objection Certificate for
use of INMARSAT terminals to the VAS Cell, Department of Telecommunications,
Room No. 1204, Sanchar Bhavan, 20, Ashoka Road, New Delhi 110 001.
2. The application for issue of NOC should be made on plain paper with following
a. Name of the party
b. Full address of the party
c. Place of use of INMARSAT terminals
d. Period of use of INMARSAT terminals
e. Purpose for which INMARSAT terminals will be used
f. Type of Terminal for which NOC is required
g. No. of terminals for which NOC is required.
Policy for issue of NOC for use of INMARSAT terminals
No Objection for location specific uses of INMARSAT ‘A’, ‘B’, ‘C’ & ‘M’
Terminals may be issued on case by case basis under specified conditions.
The NOC to individual/ public/ private sector companies/ autonomous bodies etc.
shall be issued specifying the area of operation, where it is to be used.
· NOC for INMARSAT Mini ‘M’ and M4 Terminals may be issued only to the
Government departments and Public Sector Undertakings. In case of PSUs, the
application should either be submitted by CMD himself or copy of his approval
should be enclosed with the application.
Terms and conditions for use of inmarsat Terminals:
(i) The permission issued is subject to the provisions of Indian Telegraph Act
and Rules made thereunder as modified from time to time.
(ii) The installation and maintenance of the said equipment shall be the
responsibility of the party.
(iii) The permission does not allow the proposed terminals to be directly
connected to public switched network or any other dedicated network owned either
by the party or by any other party. Such interconnection will be only through
VSNL Land Earth Station.
(iv) The permission is subject to payment of License fee, royalty charges and
other charges leviable by VSNL and WPC as per relevant terms and conditions.
(v) The party himself or their authorized persons only shall use the INMARSAT
(vi) The party shall ensure adequate safeguards against misuse.
(vii) The party should ensure that adequate safeguards are taken against the
risk of unscrupulous elements gaining access to INMARSAT terminals belonging to
the party by threat or coercion.
(viii) The equipment to be used should comply with the standard INMARSAT
(ix) Any departure from the license conditions/ change of area of operation will
need fresh sanction of DOT. However, DOT reserves its right to deny permission
to such change.
Types of INMARSAT TERMINALS
for which No Objection Certificate (NOC) is issued by DOT
v INMARSATA terminal supports telephone, fax, telex, data (9.6 Kbps) and Duplex
High Speed Data (DHSD) upto 56/66 Kbps. It also supports voice and telex group
v INMARSATA Land Mobile Terminals are readily transportable, weighing about 30
Kgs and utilising an antenna about one meter in diameter.
v VSNL started to offer INMARSATA Services from 31st July 1992.
v This is successor to INMARSATA System, it supports a similar range of services
but is cheaper to use because it is based on modern digital communications
technology and also digital design makes much better use of satellite power and
v INMARSATB Land Mobile Terminals weighs around 15 Kgs. and antenna size is
approximately 1.2 meter x 1.2 meter.
v VSNL started INMARSATB Services from November 30, 1999.
v INMARSATC Mobile Earth Station (MES) has a small omni directional antenna,
which can be easily mounted on a vehicle or vessel.
v It supports data speed up to 600 bps and provides terrestrial interfaces with
telex, fax, X.25, X.400 and Internet.
v Weighs around 3 to 4 Kgs. and has an omni directional antenna of about 25
v VSNL commenced INMARSATC Services on 12th November 1993.
v INMARSATM System offers voice (4.8 Kbps), FAX (2.4 Kbps) and data (2.4 Kbps)
v INMARSATM Terminals are lightweight, portable and available for meritime, land
mobile and portable versions.
v Unlike INMARSATA Satellite Telephones, INMARSATM is a digital system.
v Land Mobile Terminal weighs about 10 Kgs. and antenna size is approximately 70
cm x 50 cm.
v VSNL commenced this service in November 30, 1995.
5. INMARSATMini M:
v This System offers voice (4.8 Kbps), FAX (2.4 Kbps) and data (2.4 Kbps)
v INMARSATMini M Terminals are lightweight, compact and available in brief case
version, vehicle mountable version and maritime version.
v The terminal weighs around 2.5 Kgs. and the antenna size is approximately 30
cm x 30cm.
v VSNL commenced this service in May 30, 1997.
6. INMARSATMultimedia Mini M (M4):
v INMARSATMultimedia Mini M (M4) is a hybrid system of INMARSATB and
INMARSATMini M Systems.
v The terminal weighs around 4 Kgs and the antenna size is approximately 100 cm
v It supports highspeed voice, fax and circuit switch data services.
v The terminal shall be low cost, lightweight and would be supporting 64 Kbps
data facility with embedded communication applications
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