# Vocoder filter attributes

The following table shows MSPP encoder/decoder filter attributes:

Vocoder | Literal (RFC 1890 compliant) | Data rate (kbit/s) | VAD | Sample rate | Static payload ID (RFC 1890 compliant) | Dialogic default payload ID | Media packet latency | Payload size (bytes) | RTP timestamp increments
mu-law PCM | PCMU | 64 | Yes | 8000 | 0 | 0 | 10 | 80 | 80
G.726 (at 32 kbit/s) | G726_2 | 32 | No | 8000 | 2 | 2 | 10 | 40 | 80
G.723.1 | G723 | 6.4/5.3 (default=6.4) | Yes | 8000 | 4 | 4 | 30 | 24, 20 (4) | 240
A-law PCM | PCMA | 64 | Yes | 8000 | 8 | 8 | 10 | 80 | 80
G.729A | G729 | 8.0 | Yes | 8000 | 18 | 18 | 10 | 10 (2) | 80