1. STI Display Implementation and Evolution
Chia Li – Comcast Cable
August 8, 2018

2. Let’s Work Together to Advance Consumer Awareness
Follow ATIS Display Framework Guidelines and take a step forward to nail down implementation
“in an effort to accelerate the reach of Verified Caller ID across analog devices in IP networks, service providers can evaluate the use of conventional CNAM as a vehicle for relaying verification status to the consumer. “
While there are devices like OTT apps that can present more information, such as red cross or green check marks, a majority of land-line phone users still rely on the 15-character display for caller identity.
Service providers join force for unified customer experiences to promote awareness and adaptation
Agree on a common 15-character display
Agree on icons and text strings for smart device display
Share customer feedback from trial/deployment
Review the feedback and agree on revision if necessary
Work with FCC/FTC for consumer awareness/promotion
Take into considerations of different stages of STIR/SHAKEN adaptation
Initially during the adaptation phase
Do not disturb end-user experience initially for calls with failed or no Identity headers
Provide positive indication of authetic callers to help restore customer trust
Eventually reaching the mature phase
Reflect identity check results, positive, negative, or no verification, in a well-defined and easy-to-understand way
Reject calls without valid Identity headers upon FCC rulings
Analytics continue to play a key role in categorizing and scoring of the purpose/intention of calls.
Concerns on privacy and secure identity need to be balanced

3. Smartphone/OTT Client Smartphone/OTT Client
STI Display Template
Call ID Status
Legacy Phone
LED Display
Smartphone/OTT Client
STI present;
Failed verification
STI not present
Successful verification
Scam per analytics
Anonymous
STIR/SHAKEN
Adaptation
Phase
Call ID Status
Legacy Phone
LED Display
Smartphone/OTT Client
STI present;
Verification failed
(Not scam per analytics)
STI not present;
No verification
STI present; Verification succeeded
Scam per analytics
Anonymous
STIR/SHAKEN
Mature
Phase

4. STI Display Proposal – A Symbol-based Approach
Call ID Status
Legacy Phone
LED Display
Smartphone/OTT Client
STI present;
Failed verification
John Doe
STI not present
Successful verification
+John Doe
Identity Verified
Scam per analytics
Possible Scam
Anonymous
STIR/SHAKEN
Adaptation
Phase
Symbols <+,?,!> signify STI status
More characters for CNAM
STI status not readable
Call ID Status
Legacy Phone
LED Display
Smartphone/OTT Client
STI present;
Verification failed
(Not scam per analytics)
!John Doe (or phone #)
Identity Invalid
STI not present;
No verification
?John Doe
Identity Unverified
STI present; Verification succeeded
+John Doe
Identity Verified
Scam per analytics
Possible Scam
Anonymous
STIR/SHAKEN
Mature
Phase

5. STI Display Proposal – A Character-based Approach
Call ID Status
Legacy Phone
LED Display
Smartphone/OTT Client
STI present;
Failed verification
John Doe
STI not present
Successful verification
[V]John Doe
Identity Verified
Scam per analytics
Possible Scam
Anonymous
STIR/SHAKEN
Adaptation
Phase
<X,U,V> in square brackets to signify STI status
Fewer characters left for CNAM
Stronger visual effect
Allow readable STI status
Call ID Status
Legacy Phone
LED Display
Smartphone/OTT Client
STI present;
Verification failed
(Not scam per analytics)
[X]John Doe (or phone #)
Identity Invalid
STI not present;
No verification
[U]John Doe
Identity Unverified
STI present; Verification succeeded
[V]John Doe
Identity Verified
Scam per analytics
Possible Scam
Anonymous
STIR/SHAKEN
Mature
Phase