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ZEPHYR
XPORT
USER’S GUIDE
CHAPTER 2 - GETTING STARTED 9
The Default Display
This is the display you will see most of
the time. It has bargraph meters for
Send and Receive audio levels, a status
line, and modem quality bargraphs for
each direction.
The Snd and Rcv modem quality
bargraph meters indicate the quality of
the connection moment- to- moment. A certain amount of fluctuation is normal.
However, if the readings stay below the line on the meter, you should hang up and
redial as soon as convenient.
The system monitors the quality of the connection in each direction, and will
prompt you if the connection has become unstable. You will have the option of
"retraining" the modem or shifting to "phone" mode should this happen.
This default display will appear after the system has been left idle for 120 seconds.
POTS Connection Status (see section 3.1.2 for ISDN Connection status)
The connection status indicates the status of the line as follows:
On Hook - POTS mode idle
Off hook - Line is in use
Modem Detected - Modem carrier has been detected and modem training begun
Connecting. - Modem "handshake start"
Connecting.. - Modem "Ranging" stage is complete
Connecting… - Modem "Training" stage complete
Connect - Modem connection is operational
Connect Lock - Modem connection is operational and aacPlus decoder has valid data
Renegotiation Request - Far end has authorized modem re-negotiation. Audio will be re-
established in 3-5 seconds. Or, far end has dropped the call. Or, modem operation is no longer
possible, and system will revert to Phone mode.
Retrain Request - Modem connection will be re-negotiated.
Modem Lost Sync - Modem connection has been lost; unit reverting to phone mode
Warning Dialogues
In a few cases, the Xport will warn the operator about status of the modem
connection.
Marginal Performance – This indicates that the modem has detected marginal conditions that could
cause dropouts or instability. Often the problem is transient, and you can choose “IGNORE”. If you
see the dialogue more than once in a 10 minute period you may wish to choose “RETRAIN” or to
redial during a break in programming (Retrain will cause a short 5-6 second gap in audio). If you
cannot take a break, you can choose “PHONE” mode which will seamlessly switch to the telephone
quality mode until you can redial.
Bit Rate Too Low…Falling back to Phone Mode - The modem is unable to negotiate an acceptable
connection and therefore the connection has been established in “Phone” mode. You may wish to
try redialing.
Unacceptable Modem Performance…Falling back to Phone Mode – The modem connection has
failed and therefore the connection has been converted to “Phone” mode. You should redial when
convenient.
Snd
══════▪══
Rcv
══════▪══
Connect Locked 0:00:30
Modem Performance
Snd
══════▪══
Rcv
══════▪══
Send Audio Level
(Outbound)
Received Audio Level
(
Incomin
g)
Modem Quality
(Outbound)
Modem Quality
(Inbound)
Connection
Status