Section 10: POTS Operation and Usage Tips
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T E C H N O L O G Y
80% at this bit rate then the codec will ‘retrain’ the connection up to a
maximum of 28,800bps (depending on modem handshaking). The codec will
then renegotiate the link downwards to the highest possible bit rate where
line quality is greater than 70%.
10.11.4.
Dialing from a POTS G3 Module to a POTS G3 Module
When initially connecting to another POTS G3 module,
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POTS G3
modules will initially attempt to establish a connection at 28,800 bps. The
codec will then renegotiate the link downwards to the highest possible bit rate
where line quality is greater than 70%.
Very Important Renegotiation Note:
After initially connecting, if you attempt to shift the connection bit-rate
upwards locally with a POTS G3 module, the codec will ‘retrain’ upwards, not
renegotiate like the original POTS modules. Retraining takes significantly
longer than renegotiation – up to 30 seconds.
Connection Tip:
If you are connecting a POTS module to a new POTS G3 module, use the
POTS module in the local codec. This will allow you to renegotiate the
connection upwards seamlessly if required, without the delay of retraining.
10.11.5.
Dialing from a POTS Module to a POTS or POTS G3 Module
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POTS modules initially attempt to establish a link at 19,200 bps. They
will then renegotiate the link to the highest possible bit rate, either up or
down.
The codec modem can also be set for
Quick Negotiation
in the main codec
POTS menu, which will more quickly negotiate a connection at the codec bit
rate setting within this menu.
Once the connection process has
completed, the main connection
screen will be displayed. The bit-
rate of the connection and the
Line Quality of both codecs will be
displayed.
ManDflt MonoPgm
POTS1^ Enter#
[POTS2> 28.8 L91R89]
Aud Menu
