Specifications

ST1kVoiceApp ASM Voice Application Administration
SPECTRUM Enterprise Manager 145 of 194 Ascom TimePlex ST-1000
CelpNetSigMd
A read-write field having a value of
auto , link , or
st (the default value). This field is used to enable
autodetection of CELP/ATC channel connected
equipment so as to automatically change format
to become compatible with either LINK (5 byte) or
ST (8 byte) channel modes. Alternately, this field
hard sets CELP/ATC channels to be compatible
only with either LINK or ST mode compatible
equipment.
SearchDir
A read-write field having a value of
lowHigh or
highLow (the default value). This field indicates
the search order within the range specified by the
LowElement and HighElement fields.
ToneDisabler
A read-write field having a value of
g165 (the
default value),
g164 , or disable . This field
controls whether a 2100 Hz signal on this voice
channel will disable the echo canceller.
g165
means that a 2100 Hz signal with phase reversals
will disable the echo canceller.
g164 means that a
2100 Hz signal with or without phase reversals
will disable the echo canceller.
disable means
that a 2100 Hz signal will not disable the echo
canceller. This field is ignored for PCM and
CELP/ATC voice channels.
MaxErl
A read-write field having a value of
dB-1 , dB-3 , or
dB-6 (the default value). This field provides a
measure of the return loss on the local circuit.
Setting this value too high on a nominal circuit
will result in divergence. Setting this value too low
on a high return circuit will result in no echo
cancellation. This field is ignored for PCM and
CELP/ATC voice channels.
HRegCtrl
A read-write field having a value of
freeze or run
(the default value). This field allows the H register
to freeze or continue to adapt for optimal echo
cancellation. This field is ignored for PCM and
CELP/ATC voice channels.
CmftNoiseCtrl
A read-write field having a value of
off or on (the
default value). This field controls whether the
echo canceller will inject noise to the far end after
the non-linear processing. This eliminates the
dead air that can occur with non-linear
processing. This field is ignored for PCM and
CELP/ATC voice channels.
TailLength
A read-write field having a value of
ms-16 (the
default value),
ms-32 , ms-48 , or ms-64 . This field
controls the tail length used by the echo canceller.
A smaller tail length will improve the echo