Here you find a list of all audio-relevant payload types. This is mostly relevant for the configuration of call profiles.
Assigning payload type 96-127 is a good choice when you configure an unusual combination of codec, sample rate and channel count.
| Payload type (PT) | Name | Type | No. of channels | RFC |
|---|---|---|---|---|
| 0 | PCMU | A | 1 | 3551 |
| 3 | GSM | A | 1 | 3551 |
| 4 | G723 | A | 1 | 3551 |
| 5 | DVI4 | A | 1 | 3551 |
| 6 | DVI4 | A | 1 | 3551 |
| 7 | LPC | A | 1 | 3551 |
| 8 | PCMA | A | 1 | 3551 |
| 9 | G722 | A | 1 | 3551 |
| 10 | L16 | A | 2 | 3551 |
| 11 | L16 | A | 1 | 3551 |
| 12 | QCELP | A | 1 | 3551 |
| 13 | CN | A | 1 | 3389 |
| 14 | MPA | A | 1-2 | 3551, 2250 |
| 15 | G728 | A | 1 | 3551 |
| 16 | DVI4 | A | 1 | 4856 |
| 17 | DVI4 | A | 1 | 4856 |
| 18 | G729 | A | 1 | 3551 |
| 19 | reserved | A | ||
| 20 | unassigned | A | ||
| 21 | unassigned | A | ||
| 22 | unassigned | A | ||
| 23 | unassigned | A | ||
| 33 | MP2T | AV | 2250 | |
| 35-71 | unassigned | ? | ||
| 72-76 | reserved for RTCP conflict avoidance | |||
| 77-95 | unassigned | ? | ||
| 96-127 | dynamic | ? |