Telos Zephyr Xstream, User Manual

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USER’S MANUAL
Section 5: GUIDED TOUR of the MENUS 96
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IMPORTANT TIP!
It is important to understand that the Transmit and Receive settings on two connected units
may very well NOT match. This is because there are frequently times when it is appropriate
to use a different coding mode coming versus going.
The important thing to remember is that the local Transmit mode must be compatible with the
Receive settings and capabilities of the far end unit.
Whereas the local Receive mode must be compatible with the Transmit settings of the far
end unit.
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COMPATIBILITY TIP!
Some brands of codecs have proprietary protocols implemented. These codecs require that
they be placed in "Independent mode" or bi-directional communication with standard
ISO/MPEG codecs is not possible.
Bit Rate
This setting determines the per ‐ channel bit rated used for digital audio transmission. This
setting sets up the codec section as well as telling the ISDN interface what rate call to place the
call over the network.
When the Network setting in the TEL menu is set to "Single V.35" or one of the Ethernet modes
this parameter indicates the total bit rate.
This parameter must be matched between the Zephyr Xstream and the far end codec.
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COMPATIBILITY TIP!
The Zephyr Xstream specifies the bit rate per ISDN or V.35/X.21 channel. Since certain
modes (i.e. stereo or mono-128) require two channels to operate, the total (aggregate) bit
rate would be double the number displayed in these cases.
This is important as some other brands of codecs specify the total bit rate.
Since the network must accommodate the rate selected, it is important to hang up (i.e. drop the
call) and redial if this parameter is changed during a call.