Explains the principle of PVDTN-STS, how it works, and the benefits it gives to the user organisation

1. “A BUSINESS TOOL YOU CANNOT AFFORD TO BE WITHOUT”
• 100% secure, fixed operating cost,
private network.
• No usage charge.
• Set-up cost pay back
in 1 to 2 years
• Ideal communications backbone
for ERP
• Cuts present telecom costs
by up 50 to 75%.
• Unlimited inter -locational
communications - speech, fax, data.
• High network up -times.
DELHI
MUMBAI
KOLKATA
CHENNAI
• Voice and voice -data conferencing.
• Integrates voice, fax, data over
analogue and digital leased lines.
• Connects any place in the world.
• Group III fax - no time lost in
document scanning.
• While PVDTN gives all the benefits
enumerated herein by isolating the
INTRANET from public domain access,
STS ensures simultaneous presence on the
Internet through the public server PS
connected to the Internet LAN, and ensures
free flow of information / data / mail back and
forth between the Internet and the INTRANET
without impairing the 100% security of the
latter
• Normal telephone type
speech - no delay or
distortions.
• Eliminates STD calls between
Company locations.
• Converts MLOs to VSOs
•PVDTN Patent 202674
And fresh application
1156/KOL/2014 dated 11.11.2014
to cover enhancements.
&
STS Patent 262590
And fresh application
1158/KOL/2014 dated 11.11.2014
to cover improvements
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- -
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PRIVATE VOICE - DATA TELECOM NETWORK WITH SECURE TRANSFER SYSTEM
6/1A, KARTIK BOSE LANE, KOLKATA - 700006.
Phone: 91332543-3684; FAX: 91332543-3684
Mobile phone : +919432228808 / +919831210647
e-mail : midautel@bsnl.in

2. • All the problems with cyber security in the world arises from the fact that we are
catching the bull by the tail and running after it – we let all the muck in and then we try
and clean and protect ourselves from this.
• We believe that the only way to ensure 100% security of an organisation’s internal
databases is to catch the bull by the horns and lock it in. In other words isolate the
INTRANET from any public domain access. Such an isolated network is shown in the
PVDTN WAN sketches of Figs. 1 and 2. The benefits it gives the user are enumerated
below Fig. 1.
• However, since all organisations also need to be present on the Internet, the STS
(secure transfer system) was developed and patented. This allows free flow of
information / data / mail back and forth between the Internet and the INTRANET
without impairing the security of the latter.
Fig.1
• Ensures 100% security of internal databases, and WAN computing
• Saves 50 to 75% of present telecom costs
• Saves a substantial portion of inter-locational travelling costs through multiple
simultaneous NET meetings for different work groups with people from their own work
places at a moment’s notice, using
• Voice conferencing
• Voice-data conferencing
• Smartens up company operations
• The cost of re-engineering the present network can be recovered from the savings in
telecom and travelling costs in 1 to 3 years. The more the communications the quicker
the payback.
IPPN
SPLITTER
pSTN
IPPN
SPLITTER
pSTN
+
+PVDTN =
NODE 2
NODE 1
PVDTN
p2p leased line
Circuit Switched pSTN (private switched telephone network routed by EPAXs
at each location
Packet Switched IPPN (IP private network) routed by data routers
at each location

3. X
Y
X+Y
X+Y
MAX (X,Y)
PVDTN WAN
Fig. 2
INTERNETPVDTN WAN
IBN
2IBN
1
INTRANET LAN INTERNET LAN
STS
SS
OD
2
SS
OD
1
SSA
Fig. 3
PROPOSED METHOD OF
INTERNET CONNECTIVITY
LAN Nodes
VDS
DB2 CS
IS
PSDB1
VDS
CS – Company Communications Server
PS – Company Web or Public Server
IS – Intermediate Server which relays
information / data / mail back and forth
Between CS & PS.
SSA – Automatic Secure Switch which
connects IS to INTRANET and Internet
LAN buses alternately in preset
(adjustable) time.
DB1, DB2 – Company’s internal
databases.
IBN1, IBN2 – Internet Browsing Nodes
SSOD1, SSOD2 – On-demand Secure
Switch.
STS – Total Secure transfer system
comprising of CS, IS, PS and SSA

4. PVDTN – STS Connectivity Solution
Perfect answer to an organisation’s
100% security of internal data bases
against external and internal threats
&
Reduction of telecom and travelling costs
BY
6/1A, KARTIK BOSE LANE, KOLKATA - 700006.
Phone / Fax 91 33 25433684; Mobile:: +919831210647 / +919432228808
e-mail : midautel@bsnl.in;