Tieline Commander G3 TLR300, Reference Manual

Page: 110 / 383

Section 17: Operation of your Codec
T ieline
Page 110
T E C H N O L O G Y
This is a little different to dialing with the original
T
ieline POTS module.
When dialing with this module the codec displays intermediate connection
states such as answering,
negotiating and stabilizing in real-
time for each connection, as well
as
Rx and Tx numbers - as shown
in the right-hand image.
Very Important Notes:
Quick Negotiation is not necessary with the new POTS G3 module and it has
been removed from the POTS G3 module menus.
In addition, the
Auto
and
Up
options have been removed from the
Reneg
(Fast) POTS G3 module menus.
17.10.4. Dialing from a POTS G3 Module to a POTS Module
When dialing from the new POTS G3 module to an old POTS module, the
codec will attempt to connect initially at 19,200 bps. If line quality is above
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%.
17.10.5. Dialing from a POTS G3 Module to a POTS G3 Module
When initially connecting to another POTS G3 module,
T
ieline
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.
17.10.6. Dialing from a POTS Module to a POTS or POTS G3 Module
T
ieline
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.
ManDflt MonoPgm
POTS1^ Enter#
[POTS2> Tx300:Rx307]
Aud Menu