1. Enterprise Scenarios
August 2018

2. TN Proof of Possession (TN-PoP) Use Case
This scenario represents the primary TN-PoP use case considered when developing the architecture
SP-A
Analytics
SHAKEN
PoP AS
PoP VS
STI AS
STI VS …
SP-B
SP-X
SP-Y
SP-Z
SHAKEN
PoP VS
STI AS
STI VS …
SP-C
SP-X1
SP-Y1
SP-Z1

3. TN Proof of Possession (TN-PoP)
SP-A
Analytics
SHAKEN
PoP AS
PoP VS
STI AS
STI VS …
SP-B
SP-X
SP-Y
SP-Z
SHAKEN
PoP VS
STI AS
STI VS …
SP-C
SP-X1
SP-Y1
SP-Z1

4. TN Proof of Possession (TN-PoP)AS
SP-A
SP-B
SP-D
SP-C

5. TN-PoP: BPO
Originating
Carrier
BPO
SP-D
SP-C
SP-B

6. TN-PoP: Solutions PBX (TCPA) BPO Dialer BPO BPO BPO Originating
Carrier
BPO
SP-D
SP-C
BPO
SP-B
BPO
BPO

7. TN-PoP: Originating Carrier
PBX
(TCPA)
Originating
Carrier
IP-based
IXC
BPO
Dialer
SP-D
SP-C
PBX
(TCPA)
BPO
Dialer
SP-B
BPO
Dialer
Dialer
BPO
PBX
(TCPA)

8. TN-PoP: Originating Carrier
Terminating
Carrier
Analytics
SHAKEN
PoP VS
STI AS
STI VS …
SP-B
SP-X
SP-Y
SP-Z
Analytics
SHAKEN
PoP VS
STI AS
STI VS …
SP-C
SP-X
SP-Y
SP-M

9. TN-PoP: Challenges Key Questions: Who obtains the TN?
PBX
(TCPA)
Originating
Carrier
Key Questions:
Who obtains the TN?
Who generates the PASSporT token and determines the level of attestation?
How do we insure that all the other elements (3rd party and outsourced) do not contaminate the attestation?
BPO
Dialer
SP-D
SP-C
PBX
(TCPA)
BPO
Dialer
SP-B
BPO
Dialer
Dialer
BPO
IP-based
IXC
PBX
(TCPA)

10. A Real-World Example Brand A (Tkmtg) 36M/ 11K Vendor to Deliver Calls
Originating Carrier
VendorA
(1M/62#)
Carrier A
(1M/62#)
12 Carriers X Y Z
VendorB
(3M / 228#)
Brand A
(Tkmtg)
36M/ 11K
VendorC
(14M/8,171#)
Carrier B
(14M/8,171#)
VendorD
(1M/1600#)
Carrier C
(2M/1694#)
VendorE
(1M/94#)

11. Service Provider (IMS)
A Real-World Example
STI - VS
Service Provider (IMS)
STI - AS
SHAKEN Attestation

12. Summary
The TN-PoP framework was based on a relatively simple enterprise architecture.
Reality is rather more complex.
Next Steps => for discussion…