Audio Algorithm Support - Polycom RMX 1500 Administrator's Manual

Audio Algorithm Support

Guidelines
Polycom's proprietary Siren 22 and industry standard G.719 audio
algorithms are supported for participants connecting with Polycom
endpoints.
The Siren 22 audio algorithm provides CD-quality audio for better clarity
and less listener fatigue with audio and visual communication
applications. Siren 22 requires less computing power and has much lower
latency than alternative wideband audio technologies.
• Siren 22, G.719 and Siren 22Stereo are supported with MPM+ and
MPMx cards.
• Siren 22 and G.719 are supported in both mono and stereo.
• Stereo is supported in H.323 calls only.
• Siren 22 is supported by Polycom HDX endpoints, version 2.0 and
later.
• G.728 is supported with both MPM+ and MPMx cards and in H.323,
SIP and ISDN environments.
Mono
The Siren 22 and G.719 mono audio algorithms are supported at the
following bit rates:
Table 2-12 Siren22 and G.719 Mono vs Bitrate
Audio Algorithm
Siren22 64k
Siren22 48K
Siren22_32k
G.719_64k
G.719_48k
G.719_32k
G.728 16K
Polycom RMX 1500/2000/4000 Administrator's Guide
Minimum Bitrate (kbps)
384
2-61