 To configure the played DTMF signal to answered test call:
1. Open the Test Call Settings page (Configuration tab > System menu > Test Call >
Test Call Settings).
Figure 63-3: Test Call Settings Page
2. In the 'Test Call DTMF String' field, enter the DTMF string (up to 15 digits).
3. Click Submit.
63.3 Configuring Basic Test Call
The Basic Test Call feature tests incoming Gateway / IP-to-IP calls from a remote SIP
endpoint to a simulated test endpoint on the device. The only required configuration is to
assign a prefix number (test call ID) to the simulated endpoint. All incoming calls with this
called (destination) prefix number is identified as a test call and sent to the simulated
endpoint. The figure below displays a basic test call example.
Figure 63-4: Incoming Test Call Example
 To configure basic call testing:
1. Open the Test Call Settings page (Configuration tab > System menu > Test Call >
Test Call Settings).
Figure 63-5: Test Call Settings Page
2. In the 'Test Call ID' field, enter a prefix for the simulated endpoint.
3. Click Submit to apply your settings.
Notes:
• The Basic Test Call feature tests incoming calls only and is initiated only
upon receipt of incoming calls with the configured prefix.
• For a full description of this parameter, see 'SIP Test Call Parameters' on
page 773.
• This call test is done on all SIP interfaces.
• This call test is applicable only to the Gateway/IP-to-IP application.