ITU Workshop on “Caller ID Spoofing”
(Geneva, Switzerland, 2 June 2014)
Analysis of Caller ID delivery in China
Hexian Huang
CATR, China
huanghexian@catr.cn
Geneva, Switzerland, 2 June 2014
Service about caller ID delivery
Connected line identification
presentation (COLP) is a service
provided to the user.
This service should identify the caller
ID accurately, and call back
conveniently, which is also a
requirement in China.
Geneva, Switzerland, 2 June 2014
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The Condition of Caller ID delivery for
traditional Network in China
China have strict requirements for
caller ID delivery in the traditional
network.
There are standards about caller ID
delivery inter- operations’ networks,
which include the caller ID format, bit
length, etc.
All the standards are on service level.
Geneva, Switzerland, 2 June 2014
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The Condition of Caller ID Modification
for Traditional Network
To satisfy the needs of user privacy,
some services of changing the caller
is allowed in China.
While such operations are strictly
controlled and these change must be
traceable, so that we can find the
real caller.
Geneva, Switzerland, 2 June 2014
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The Fraud Cases Caused by
Caller ID Spoofing
In recent years, the telephone fraud
cases appear frequently. A large part
of them use the caller ID which make
the called user misunderstanding and
fooled easily.
Geneva, Switzerland, 2 June 2014
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The Fraud Cases Caused by
Caller ID Spoofing
The spoofing caller ID includes:
Police department telephone number
State organs telephone number
Notary departments telephone number
Impersonate any international numbers,
etc.
Geneva, Switzerland, 2 June 2014
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The Fraud Cases Caused by
Caller ID Spoofing
The fraud by internet calls have
made a lot of users suffered
economic loss in China. Most of these
fraud calls are from the international,
which increases the difficulty for
investigative.
Geneva, Switzerland, 2 June 2014
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Interworking between the Internet
and traditional network
There are two scenarios:
Scenario 1:
Unique caller ID
Identify the
source of the
No unauthorized
call
modification of
caller ID
Scenario 2:
Geneva, Switzerland, 2 June 2014
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Proposal
We hope that we can work together on
reducing the caller ID spoofing and
protect the interests of users from two
sides:
Developing more complete standards
Strengthen the supervision on it
Geneva, Switzerland, 2 June 2014
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Thanks！
Geneva, Switzerland, 2 June 2014