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A
DTMF
BOUT
D
ISDN
ETECTION ON
S
-
-IP
OR
ERIAL
TO
C
ALLS
C
DTMF
ONFIGURING
S
ETTINGS
The Gateway passes incoming in-band DTMF signals to the IP-side endpoint
unchanged. In addition, you can configure the Gateway to convert in-band
DTMF signals from the ISDN or serial side to H.245 out-of-band signals on the
IP side.
Figure 3-3
illustrates ISDN or serial-to-IP DTMF processing.
Figure 3-3
ISDN or Serial-to-IP DTMF Processing
Duplicate DTMF signal from ISDN or Serial side as out-of-band on IP side
Unchecked
ISDN or Serial
in-band
Gateway
You can enable DTMF detection and settings in the Advanced section of the
Settings tab.
Procedure
In the Gateway interface, on the sidebar, click Gateway (if not already
1
selected).
2
Click the Settings tab.
3
Click Advanced.
4
In the IP to ISDN Calls section of the PRI Gateway, you can select the
Translate DTMF from IP out-of-band (H.245) to ISDN in-band
(G.711 only) check box.
In the IP to Serial Calls section of the Serial Gateway, you can select the
Translate DTMF from IP out-of-band (H.245) to Serial in-band
(G.711 only) check box.
When selected, the Gateway performs the following:
Converts H.245 out-of-band DTMF signals coming from the H.323
IP-side endpoint to in-band signals on the ISDN side.
IP
ISDN or Serial
in-band
in-band
Configuring the SCOPIA Gateway
Configuring Gateway Settings
Checked
IP
H.245 out-of-
band
in-band
Gateway
119
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