User`s manual
EAGLE
Multi-Standard Dual-Channel Digital Audio Codec
20
4.5. Auxiliary data channels. ANCILLARY DATA PORT 1 and 2.
It is possible to enable one transparent two-way end-to-end data channel along with each audio
channel, to which we can interface data terminal equipment between both units (for example,
computers). This is a transparent two-way variable-speed end-to-end link, one for each audio
channel.
The data channel may be set up according to the encoding mode being used in the connection
that is established. Data channels are not available in G. 711 and G. 722 STAT voice modes.
There are some possible connection speeds:
- Maximum (MAXIMUM), where you can transmit and receive at up to 64 kbps in one 64 kbps
connection (one B channel), or transmit and receive at up to 115 kbps in a 128k connection.
With this option, the audio bandwidth may be reduced if the data flow is large, and an
interruption in the audio may occur because of the data transmission requirements.
- User’s fixed (CUSTOM), where the user through a PC defines the speed.
- Minimum (MINIMUM), where the speed is set at 1200bps. In this option, the quality of the
audio being transmitted does not deteriorate.
- 1200/2400/4800/9600 a permanent data channel is established at the selected baud rate. In
this configuration, selected baud rate is the same as the speed used in the hardware RS232
interface.
The configuration of the auxiliary data channels is done through the SETUP section (1) (9).
- On the main screen, press NO (red) to access the SETUP menu.
- With the cursor arrows, go to the ANCILL DATA option and press OK.
- With the cursor arrows, select the channel where you want to configure your data channel, and
press OK.
- With the cursor arrows, select BAUD RATE to define the speed of the data channel, then
press OK
- With the cursor arrows, select: MAXIME, FIXED or MINIME, then press OK.
- Press NO to return to previous menu and select ENABLE, then press OK.
- Select between DISABLE, RX ONLY, TX ONLY, TX&RX
Consult Annex A.4. Acilliary Data Channel at the end of this users manual.