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Configuring Gateway Settings
A
DTMF
BOUT
D
ETECTION ON
IP-
-ISDN
TO
OR
S
C
ERIAL
ALLS
118
SCOPIA 400/1000 Gateway User Guide
Table 3-17
DTMF Tone Assignments
1209 Hz
697 Hz
GHI
770 Hz
PRS
852 Hz
941 Hz
The Gateway passes incoming in-band DTMF signals to the ISDN or serial-side
endpoint unchanged. In addition, you can configure the Gateway to convert
H.245 out-of-band DTMF signals from the IP side to in-band signals on the
ISDN or serial side.
Figure 3-2
processing.
Figure 3-2
IP-to-ISDN or Serial DTMF Processing
Duplicate DTMF signal from ISDN or Serial side as out-of-band on IP side
Unchecked
ISDN or Serial
in-band
1336 Hz
ABC
1
2
JKL
4
5
TUV
7
8
oper
*
0
illustrates IP-to-ISDN or serial DTMF
IP
ISDN or Serial
in-band
in-band
1477 Hz
1633 Hz
DEF
3
A
MNO
6
B
WXY
9
C
#
D
Checked
IP
H.245 out-of-
band
in-band
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