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C H A P T E R
3
C O N F I G U R I N G
V 1 0 0
3.4.5.2
The SIGNALS & TONES menu
DTMF RELAY
DTMF Relay mode is enabled or disabled on all ports. When DTMF Relay mode is disabled, the V100
operates as it did prior to release 2.1.22 - the DTMF tones are carried through the compressed voice path.
When DTMF Relay is enabled, the DTMF digits are regenerated in the decoder and thus are not subject to
the loss effects through the standard encoder/decoder path. If DTMF is disabled and DTMF applications do
not seem to be working, the user may enable DTMF and tune the signal levels as necessary until the
application detectors work correctly.
NOTE: DTMF Relay must be enabled on at least the encoding side for the relay to work -even if
DTMF Relay is disabled on the decoder, the DTMF digit is regenerated correctly.
DTMF OUTPUT LEVEL
By using the DTMF Output Level setting, it is possible to adjust the volume of DTMF tone pairs relative to
all other (comfort) tones. The relative output level of the low frequency tone for DTMF digits (relative to
the high frequency output level) can be tuned.
DTMF TWIST
The twist allows you to set the relative levels of each member of the tone pair if necessary although by
using the defaults this is rarely necessary.
V100 Versatile Multiplexer Technical Manual Version 2.2
Page 61 of 231
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