1. MEID JEM February 11th-12th Seattle Operator Use of GSM IMEI Stephen Packer - Vodafone Ltd.

2. Use of the IMEI Construction; Current and Proposed Operators’ use of IMEI: –Customer Care –Market Information –Model Performance Metrics –Security

3. Construction; Current and Proposed 1 of 2 Existing IMEI : NN - Notified Body TAC - Type Allocation Code FAC - Final Assembly Code XXXXXX- Individual Serial Number CD- Check Digit; transmitted as a ‘0’ integrity protection for Customer Care

4. Construction; Current and Proposed 2 of 2 Proposed IMEI : NN - Notified Body TAC - Type Allocation Code FF - ‘Old’ Final Assembly Code XXXXXX- Individual Serial Number CD- Check Digit; transmitted as a ‘0’ integrity protection for Customer Care

5. 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

6. 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.)

7. Operators’ use of IMEI 3 of 4 Model 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.)

8. Operators’ use of IMEI 3 of 4 Security 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)