Specifications

32 Matrix SETU ATA211 System Manual
Vocoders
1. Select Vocoders in the order of preference from the multiple selection box.
Vocoders are the various voice codecs used to compress the data in RTP packets for optimum use of
bandwidth and for ensuring voice quality. You can set 4 Vocoder options in the order of preference.
The Vocoders supported by SETU ATA211 in the order of preference, i.e. 1st to 4th, listed in the Used
Codecs box are:
• G.711 A - Law
•G.711  Law
• G.729
• G.723
• To remove a Vocoder from this list, select the Vocoder and the back arrow <
• The Vocoder will be moved to the Unused Codecs box.
• Select the required Vocoders from the right list box with your cursor.
• Use the Up and Down arrows near the Used Codecs box to change the order of Vocoder preference..
2. If you have G.723 as a Preferred Vocoder, select G.723 Bit Rate as: 5.3 Kbps or 6.3 Kbps. Default:
6.3kpbs.
When G.723 is negotiated, the selected Bit Rate will be applied only when sending the RTP packets.
When receiving RTP packets from the remote end, both Bit Rates of G.723 will be accepted.