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MEID JEM February 11th-12th Seattle Operator Use of GSM IMEI Stephen Packer - Vodafone Ltd. Use of the IMEI. Construction; Current and Proposed Operators’ use of IMEI: Customer Care Market Information Model Performance Metrics Security. Construction; Current and Proposed 1 of 2.
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MEID JEM February 11th-12th SeattleOperator Use of GSM IMEIStephen Packer - Vodafone Ltd.
Use of the IMEI • Construction; Current and Proposed • Operators’ use of IMEI: • Customer Care • Market Information • Model Performance Metrics • Security
Construction; Current and Proposed 1 of 2 • Existing IMEI : • NN - Notified BodyTAC - Type Allocation CodeFAC - Final Assembly CodeXXXXXX - Individual Serial NumberCD - Check Digit; transmitted as a ‘0’ integrity protection for Customer Care
Construction; Current and Proposed 2 of 2 • Proposed IMEI : • NN - Notified BodyTAC - Type Allocation CodeFF - ‘Old’ Final Assembly CodeXXXXXX - Individual Serial NumberCD - Check Digit; transmitted as a ‘0’ integrity protection for Customer Care
Operators’ use of IMEI 1 of 4 Customer Care • Identify Customers’ equipment type • Provide Model Specific help to Customers on accessing network features • Know when a customer calls what equipment she is using • Offer pro-active advice if issues are known about • Check IMEI quoted (customer provided) is correct using Check Digit
Operators’ use of IMEI 2 of 4 Market Information • Unambiguously identify every equipment type • Identify total numbers of each equipment type on Operator’s Network • Check dealers are connecting what they claim! (Subsidy may be tied to features etc.)
Operators’ use of IMEI 3 of 4Model Performance Metrics • Toll Tickets (Billing Computer records) imported into data warehouse. • IMEI is one field, as is the reason for the call cleardown • Can search records, grouping by TAC code to identify: • Dropped Call Rate per handset type • Revenue gained per handset type- can feed into subsidy decisions (Mean Call Duration, Number of Calls, Number of Text Messages sent etc.)
Operators’ use of IMEI 3 of 4Security • IMEI is specific to each handset • Stolen handsets can be blacklisted • GSM Association fund a body to co-ordinate IMEI registrations and also have a central database where Operators can exchange stolen phone information (Blacklist Exchange)