# RTP_PAYLOAD_MAP

This structure associates an expected payload ID for incoming RTP packets with an endpoint type. Use RTP_PAYLOAD_MAP with the MSP_CMD_RTPFDX_MAP command, which can be sent to video RTP endpoints.

typedef struct tag_RTP_PAYLOAD_MAP
{
DWORD vocoder;
DWORD payload_id;
} RTP_PAYLOAD_MAP;

For video endpoints, use the following values in the vocoder field:

Endpoint type | Value
MPEG-4 | 100 (MSP_CONST_VOCODER_MPEG4_VIDEO)
H.263/RFC 2190 | 34 (MSP_CONST_VOCODER_H263_2190_VIDEO)
H.263/RFC 2429 | 101 (MSP_CONST_VOCODER_H263_2429_VIDEO)
H.264 | 104 (MSP_CONST_VOCODER_H264_VIDEO)

For more information, see the MSPP Service Developer's Reference Manual.