Found here is a handy list of Telos Zephyr
Transmission modes. Modes
can be individually selected for the Transmit and Receive paths.
Need to connect your Zephyr to another brand
of codec? Click here.
Stereo and
Dual-Mono Modes using two ISDN "B" channels:
- Layer III
Joint-Stereo at 20kHz or 15kHz for maximum fidelity.*
- Layer III
Independent Stereo at 20kHz or 15kHz for lower delay and
surround-sound transmission.*
- Layer III
Dual-Mono at 20kHz or 15kHz when each channel has unique
audio.*
- Layer II
Joint Stereo at 20kHz for compatibility.*
- G.722
Dual-Channel at 7kHz for compatibility and/or lowest delay.
Mono Modes
using one ISDN "B" channel:
- Layer III Dual/Mono at 20kHz
or 15kHz for maximum fidelity.
- Layer II Mono at 7.8kHz or
9.8kHz for compatibility (48 kHz sample rate).
- Layer II Mono at 8.6kHz for
compatibility (24 kHz sample rate).
- G.722 at 7kHz for
compatibility and/or lowest delay.
Mono Modes using two ISDN "B" Channels:
- Layer II Mono-128 at 20kHz for reduced data compression
and compatibility.*
Split-Channel
Modes using two ISDN "B" channels:
- Individual
mono signals are sent via Layer III and received via G.722
from separate sites.*
ISDN
Telephone Mode:
- G.711 is
used to call a standard POTS telephone for low-grade voice
communications over a single "B" channel.
*
These modes require a stereo capable Zephyr (such as Models 920X or 9302)
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