SIP User's Manual 326 Document #: LTRT-83310
Mediant 600 & Mediant 1000
18.6.6 Configuring Automatic Dialing
The Automatic Dialing page allows you to define a telephone number that is automatically
dialed when an FXS or FXO port is used (e.g., off-hooked).
Notes:
• After a ring signal is detected on an 'Enabled' FXO port, the device
initiates a call to the destination number without seizing the line. The line
is seized only after the call is answered.
• After a ring signal is detected on a 'Disabled' or 'Hotline' FXO port, the
device seizes the line.
• You can also configure automatic dialing using the ini file table parameter
TargetOfChannel.
• You can configure the device to play a Busy/Reorder tone to the Tel side
upon receiving a SIP 4xx, 5xx, or 6xx response from the IP side (i.e., Tel-
to-IP call failure), using the ini file parameter FXOAutoDialPlayBusyTone
(see 'Configuration Parameters Reference' on page 541).
To configure Automatic Dialing:
1. Open the Automatic Dialing page (Configuration tab > VoIP menu > GW and IP to IP
submenu > Analog Gateway submenu > Automatic Dialing).
2. In the 'Destination Phone Number' field corresponding to a port, enter the telephone
number that you want automatically dialed.
3. From the 'Auto Dial Status' drop-down list, select one of the following:
• Disable [0]: The automatic dialing feature for the specific port is disabled (i.e., the
number in the 'Destination Phone Number' field is ignored).
• Enable [1]: The number in the 'Destination Phone Number' field is automatically
dialed if the phone is off-hooked (for FXS interfaces) or a ring signal (from
PBX/PSTN switch) is detected (FXO interfaces). The FXO line is seized only after
the SIP call is answered.
• Hotline [2]:
♦ FXS interfaces: When a phone is off-hooked and no digit is dialed for a
user-defined time (configured using the parameter HotLineToneDuration),
the number in the 'Destination Phone Number' field is automatically dialed.
♦ FXO interfaces: If a ring signal is detected, the device seizes the FXO line,
plays a dial tone, and then waits for DTMF digits. If no digits are detected for
a user-defined time (configured using the parameter HotLineToneDuration),
the number in the 'Destination Phone Number' field is automatically dialed by
sending a SIP INVITE message with this number.
4. Click Submit to apply your changes.
5. To save the changes to flash memory, see 'Saving Configuration' on page 482.
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