Section: 8.59 Source Identification
Content: The Source Identification information element is coded as depicted in Figure 8.59-1. Figure 8.59-1: Source Identification The Target Cell ID shall be same as the Octets 3 to 10 of the Cell Identifier IEI in 3GPP TS 48.018[ None ]  [34]. Source Type values are specified in Table 8.59-1. If the Source Type is Cell ID, this indicates PS handover from GERAN A/Gb mode. In this case the coding of the Source ID field shall be same as the Octets 3 to 10 of the Cell Identifier IEI in 3GPP TS 48.018[ None ]  [34]. If the Source Type is RNC ID, this indicates PS handover from GERAN Iu mode or for inter-RAT handover from UTRAN. In this case the Source ID field shall include a transparent copy of the corresponding parameter (see clause 8.2.2), the Source RNC-ID as specified within the "Source ID" parameter in 3GPP TS 25.413[ UTRAN Iu interface Radio Access Network Application Part (RANAP) signalling ]  [33]. NOTE: In fact, the ASN.1/PER encoded binary value of the "Source RNC ID" shall be copied into octets 14 to (n+4). Table 8.59-1: Source Type values and their meanings