RTP audio video profile Audio and video payload types Audio and video payload types

| Payload_type_PT | Name_ | Type_ | No_of_channels | Clock_rate_Hz | Frame_size_ms | Default_packet_size_ms | Description | References_ |
|---|---|---|---|---|---|---|---|---|
| 0 | PCMU | audio | 1 | 8000 | any | 20 | ITU-T G.711 PCM µ-Law Audio 64 kbit/s | RFC 3551 |
| 1 | reserved (previously 1016) | audio | 1 | 8000 |  |  | reserved, previously CELP Audio 4.8 kbit/s | RFC 3551, previously RFC 1890 |
| 2 | reserved (previously G721) | audio | 1 | 8000 |  |  | reserved, previously ITU-T G.721 ADPCM Audio 32 kbit/s | RFC 3551, previously RFC 1890 |
| 3 | GSM | audio | 1 | 8000 | 20 | 20 | European GSM Full Rate Audio 13 kbit/s (GSM 06.10) | RFC 3551 |
| 4 | G723 | audio | 1 | 8000 | 30 | 30 | ITU-T G.723.1 | RFC 3551 |
| 5 | DVI4 | audio | 1 | 8000 | any | 20 | IMA ADPCM Audio 32 kbit/s | RFC 3551 |