International Call Termination

1
International Call Termination
Md. Ahsan-ul Islam DE, ITX, Mohakhali
2
What is Call Termination ?
3
What is Call Termination ?
It means carrying Voice Calls and terminating
those calls to the desired Subscriber number
4
What is Call Termination ?
It means carrying Voice Calls and terminating
those calls to the desired Subscriber number
Its not a big deal, many operators do that
5
What is Call Termination ?
It means carrying Voice Calls and terminating
those calls to the desired Subscriber number
Its not a big deal, many operators do that
So why it is so important to talk about ? And
wasting your valuable time for that ?
6
Well, not all types of call terminations are
worth talking about
7
Well, not all types of call terminations are
worth talking about
International Call Terminations! Well it may be
worth to talk about
8
Well, not all types of call terminations are
worth talking about
International Call Terminations! Well it may be
worth to talk about But, BTTB is doing that for
quite a long time !
9
Well, not all types of call terminations are
worth talking about
International Call Terminations! Well it may be
worth the talk But, BTTB is doing that for quite
a long time !
Well, when people are doing it illegally, it is
very worth to talk about !
10
Well, not all types of call terminations are
worth talking about
International Call Terminations! Well it may be
worth the talk But, BTTB is doing that for quite
a long time !
Well, when people are doing it illegally, it is
very worth to talk about !
These days when everybody in the telecom
community of Bangladesh speaks about call
termination, they automatically refer to the
illegal carrying of international voice traffic
in to Bangladesh
11
How this illegal Call Termination is made ?
12
How this illegal Call Termination is made ?
In all of the cases, the calls are carried in to
Bangladesh by using VoIP via VSATs
13
How this illegal Call Termination is made ?
In all of the cases, the calls are carried in to
Bangladesh by using VoIP via VSATs
The equipment and technology is easily available
and not so costly
14
How this illegal Call Termination is made ?
In all of the cases, the calls are carried in to
Bangladesh by using VoIP via VSATs
The equipment and technology is easily available
and not so costly
But, the rewards are very very huge
15
How this illegal Call Termination is made ?
In all of the cases, the calls are carried in to
Bangladesh by using VoIP via VSATs
The equipment and technology is easily available
and not so costly
But, the rewards are very very huge
One will get dizzy, if he gets the idea of the
amount of money it generates
16
Lets have short glimpse of the network involved
17
(No Transcript)
18
1 A subscriber in USA dials a toll free
number and is connected to an IVR
1
19
1 A subscriber in USA dials a toll free
number and is connected to an IVR
2 The subscriber dials his card number
and/ or PIN code
2
1
20
1 A subscriber in USA dials a toll free
number and is connected to an IVR
2 The subscriber dials his card number
and/ or PIN code
3 The IVR, on authentication connects the
subscriber to a VoIP gateway
3
2
1
21
1 A subscriber in USA dials a toll free
number and is connected to an IVR
2 The subscriber dials his card number
and/ or PIN code
4
3 The IVR, on authentication connects the
subscriber to a VoIP gateway
3
2
4 The VoIP Gateway receives the dial
digits, converts the country code in to IP
address of its other-end gateway and
connects to its ISP
1
22
5
1 A subscriber in USA dials a toll free
number and is connected to an IVR
2 The subscriber dials his card number
and/ or PIN code
4
3 The IVR, on authentication connects the
subscriber to a VoIP gateway
3
2
4 The VoIP Gateway receives the dial
digits, converts the country code in to IP
address of its other-end gateway and
connects to its ISP
1
5 The ISP sends the packets to the WWW
cloud
23
6
5
6 The destined ISP in Dhaka receives the
packets and routes them to the destined VoIP
gateway
4
3
2
1
24
6
5
6 The destined ISP in Dhaka receives the
packets and routes them to the destined VoIP
gateway
4
7
7 The VoIP gateway in Dhaka has some
Telephone connected to it and uses those
number as sort of PABX.
3
2
1
25
6
5
6 The destined ISP in Dhaka receives the
packets and routes them to the destined VoIP
gateway
4
7
7 The VoIP gateway in Dhaka has some
Telephone connected to it and uses those
number as sort of PABX.
8
3
2
8 The VoIP gateway in Dhaka also converts
the received packets in to digits and sends
them to the circuit-switched network
1
26
6
5
6 The destined ISP in Dhaka receives the
packets and routes them to the destined VoIP
gateway
4
7
7 The VoIP gateway in Dhaka has some
Telephone connected to it and uses those
number as sort of PABX.
8
3
2
8 The VoIP gateway in Dhaka also converts
the received packets in to digits and sends
them to the circuit-switched network
1
9
9 Once the call is connected, the voice is
carried-over in packets over the WWW
27
All you need at Dhaka end is
28
All you need at Dhaka end is
1. Some (preferably in multiples of eight)
Telephone Numbers preferably BTTB. But
Mobiles are not bad either.
29
All you need at Dhaka end is
1. Some (preferably in multiples of eight)
Telephone Numbers preferably BTTB. But
Mobiles are not bad either.
2. A VoIP Gateway with analog ports but you may
get them free ! Courtesy of your partner
abroad.
30
All you need at Dhaka end is
1. Some (preferably in multiples of eight)
Telephone Numbers preferably BTTB. But
Mobiles are not bad either.
2. A VoIP Gateway with analog ports but you may
get them free ! Courtesy of your partner
abroad.
3. A Broadband (64 Kbps and above) symmetrical
ISP connectivity.
31
All you need at Dhaka end is
1. Some (preferably in multiples of eight)
Telephone Numbers preferably BTTB. But
Mobiles are not bad either.
2. A VoIP Gateway with analog ports but you may
get them free ! Courtesy of your partner
abroad.
3. A Broadband (64 Kbps and above) symmetrical
ISP connectivity.
4. Partnership with a VoIP carrier from abroad
32
All you need at Dhaka end is
1. Some (preferably in multiples of eight)
Telephone Numbers preferably BTTB. But
Mobiles are not bad either.
2. A VoIP Gateway with analog ports but you may
get them free ! Courtesy of your partner
abroad.
3. A Broadband (64 Kbps and above) symmetrical
ISP connectivity.
4. Partnership with a VoIP carrier from abroad
So Easy !
33
How this Call Termination is affecting BTTBs
International Traffic ?
34
How this Call Termination is affecting BTTBs
International Traffic ?
Well! it is having a huge negative impact on
number of calls coming in through
BTTBs International Gateway and thus a huge
loss in potential foreign currency earning
35
How this Call Termination is affecting BTTBs
International Traffic ?
Well! it is having a huge negative impact on
number of calls coming in through
BTTBs International Gateway and thus a huge
loss in foreign currency earning
And Dhaka is the main target for these illegal
call terminators
36
How this Call Termination is affecting BTTBs
International Traffic ?
Well! it is having a huge negative impact on
number of calls coming in through
BTTBs International Gateway and thus a huge
loss in foreign currency earning
And Dhaka is the main target for these illegal
call terminators
The following chart will give a brief example to
back my understanding
37
How this Call Termination is affecting BTTBs
International Traffic ?
Total number of telephones of BTTB 670,000 Tot
al number of telephone in Dhaka MEA 460,000
of Total BTTB telephones in Dhaka about 70
38
How this Call Termination is affecting BTTBs
International Traffic ?
Total number of telephones of BTTB 670,000 Tot
al number of telephone in Dhaka MEA 460,000
of Total BTTB telephones in Dhaka about 70
Logically, the number of calls in to Dhaka number
should be at least 70, if not more
39
How this Call Termination is affecting BTTBs
International Traffic ?
Total number of telephones of BTTB 670,000 Tot
al number of telephone in Dhaka MEA 460,000
of Total BTTB telephones in Dhaka about 70
Logically, the number of calls in to Dhaka number
should be at least 70, if not more
But lets see the actual scenario !
40
How this Call Termination is affecting BTTBs
International Traffic ?
Total number of telephones of BTTB 670,000 Tot
al number of telephone in Dhaka MEA 460,000
of Total BTTB telephones in Dhaka about 70
Logically, the number of calls in to Dhaka number
should be at least 70, if not more
But lets see the actual scenario !
One days traffic data of ITX2 shows that Total
incoming calls from overseas to BTTB numbers
155,474 Total calls to Dhaka
numbers 33,568 Total calls to rest of the
country 121,906
41
How this Call Termination is affecting BTTBs
International Traffic ?
Total number of telephones of BTTB 670,000 Tot
al number of telephone in Dhaka MEA 460,000
of Total BTTB telephones in Dhaka about 70
Logically, the number of calls in to Dhaka number
should be at least 70, if not more
But lets see the actual scenario !
One days traffic data of ITX2 shows that Total
incoming calls from overseas to BTTB numbers
155,474 Total calls to Dhaka
numbers 33,568 Total calls to rest of the
country 121,906
It is about only 21
42
How this Call Termination is affecting BTTBs
International Traffic ?
Incoming International Calls in to Dhaka is only
21 ! So where are the other 49 going ?
43
How this Call Termination is affecting BTTBs
International Traffic ?
Incoming International Calls in to Dhaka is only
21 ! So where are the other 49 going ?
Have all the Bangladeshis around the world
stopped talking to people in Dhaka ?
44
How this Call Termination is affecting BTTBs
International Traffic ?
Incoming International Calls in to Dhaka is only
21 ! So where are the other 49 going ?
Have all the Bangladeshis around the world
stopped talking to people in Dhaka ?
Lets look at another table
45
How this Call Termination is affecting BTTBs
International Traffic ?
Incoming International Calls in to Dhaka is only
21 ! So where are the other 49 going ?
Have all the Bangladeshis around the world
stopped talking to people in Dhaka ?
Lets look at another table
In Dhaka SBN Alcatel Local Exchange
Number of lines in March 2002 33000 Number of
lines in March 2003 37000 increase in
lines 12.12
46
How this Call Termination is affecting BTTBs
International Traffic ?
Incoming International Calls in to Dhaka is only
21 ! So where are the other 49 going ?
Have all the Bangladeshis around the world
stopped talking to people in Dhaka ?
Lets look at another table
In Dhaka SBN Local Exchange
Number of lines in March 2002 33000 Number of
lines in March 2003 37000 increase in
lines 12.12
But see how the incoming calls has declined
47
How this Call Termination is affecting BTTBs
International Traffic ?
In Dhaka SBN Local Exchange
Number of lines in March 2002 33000 Number of
lines in March 2003 37000 increase in
lines 12.12
But see how the incoming calls has declined
In SBN Alcatel Exchange
48
How this Call Termination is affecting BTTBs
International Traffic ?
But where are these potential international
incoming calls going to ? ? ?
49
How this Call Termination is affecting BTTBs
International Traffic ?
But where are these potential international
incoming calls going to ? ? ?
To the illegal Call Termination Points, of course
!
50
How this Call Termination is affecting BTTBs
International Traffic ?
What about the Mobile Scenario ?
51
How this Call Termination is affecting BTTBs
International Traffic ?
What about the Mobile Scenario ?
The following data will clarify that
52
How this Call Termination is affecting BTTBs
International Traffic ?
What about the Mobile Scenario ?
The following data will clarify that
There is a peculiar difference between the four
mobile operators in terms of the distribution
of incoming international calls Operator A has
about 209 paid minutes per subscriber with BTTB
connectivity but Operator B has only 28 paid
minutes per subscriber with BTTB
connectivity Operator C has only 46 paid minutes
per subscriber with BTTB connectivity Operator D
has only 23 paid minutes per subscriber with BTTB
connectivity
53
How this Call Termination is affecting BTTBs
International Traffic ?
What about the Mobile Scenario ?
I Think, the Mobiles of those three operators are
also being used by the Call Terminators
54
You see, Ladies and Gentlemen
These Call Terminators are DRACULAs
55
You see, Ladies and Gentlemen
These Call Terminators are DRACULAs They are
sucking the much needed foreign currency blood
from the ailing body of the country
56
You see, Ladies and Gentlemen
These Call Terminators are DRACULAs They are
sucking the much needed foreign currency blood
from the ailing body of the country
These DRACULAs must be stopped and stopped for
good
57
These DRACULAs must be stopped and stopped for
good
It is the GoB, MoPT, BTRC and other concerned to
find ways and means to stop this
menace Officially it is the job of BTRC
58
Thank You Ladies and Gentlemen