Section: 8.10 Mobile Equipment Identity (MEI)
Content: Mobile Equipment Identity (MEI) is coded as depicted in Figure 8.10-1. MEI is defined in clause 6.2 of 3GPP TS 23.003[ Numbering, addressing and identification ]  [2]. Figure 8.10-1: Mobile Equipment (ME) Identity (MEI) The ME Identity field contains either the IMEI or the IMEISV as defined in clause 6.2 of 3GPP TS 23.003[ Numbering, addressing and identification ]  [2]. It is encoded as specified in clause 7.7.53 of 3GPP TS 29.060[ General Packet Radio Service (GPRS); GPRS Tunnelling Protocol (GTP) across the Gn and Gp interface ]  [4], beginning with octet 4 of Figure 7.7.53.1. The IMEI(SV) digits are encoded using BCD coding where IMEI is 15 BCD digits and IMEISV is 16 BCD digits. For IMEI, bits 5 to 8 of the last octet shall be filled with an end mark coded as '1111'.