Test your Elastic SIP Trunk

If you want to practice making a call and check that your communications infrastructure was properly configured with your Twilio Trunk, you can make a test call to our friendly assistant Play. She will prompt you to record a message, and then play it back for you - you will know right away if your configuration is working.

Below, you will find the phone numbers you can use to reach Play and test your Elastic SIP Trunk. These numbers may only be called via your Twilio Trunk and are free of charge.

• +1(650)4-TWILIO ( +1(650)489-4546 )
• +1(415)475-TEST ( +1(415)475-8378 )

• +44-1-61-850-TEST ( +44-1-61-850-8378 )

• +55-1-940-42-22-55

• If your call didn't go through successfully, heard no ringing tone and/or simply got disconnected you probably have a problem with the number format you are using; please check that you're using standard E.164 format . Or you may have a problem with your Authentication settings (see Termination settings ) or your communications infrastructure configuration (see Configuration Guides ). It is advisable to look at your communications infrastructure logs and/or PCAP which may indicate how the call failed.
• If you heard a ringing tone but didn't hear Play's voice, you probably have an IP addressing issue for the media ranges. Please make sure you're using your public IP addresses in your SIP/SDP and re-check your Firewall settings (see IP addresses ).
• If you heard Play's voice but didn't hear your own recorded message played back, you probably have a problem with your Firewall settings (see IP addresses ) or your communications infrastructure configuration (see Configuration Guides ).
• If you heard Play's voice and heard your recorded message, then your configuration is working just fine and you're good to go!

If you are still encountering issues, check out our Troubleshooting your Trunk page, where you can find some common issues you might encounter when configuring your Elastic SIP Trunk.

If you want to check that your communications infrastructure was properly configured to receive incoming calls from the PSTN via your Twilio Trunk, you can have our friendly assistant Play place a test call to any of your Numbers associated with this Trunk. She will prompt you to record a message, and then play it back for you - you will know right away if your configuration is working. Test a Trunking Origination Call by selecting the number you want Play to call, and clicking on Make a test call: Test Complete!

If your phone rang, and you heard Play's voice and heard your recorded message, then your configuration is working just fine and you're good to go!

• If your phone rang, you picked up but didn't hear Play's voice, you probably have an IP addressing issue for the media ranges. Please make sure you're using your public IP addresses in your SIP/SDP and re-check your Firewall settings (see IP addresses ).
• If your call didn't go through successfully, heard no ringing tone in 30 seconds on your phone and/or simply got disconnected you probably have a problem with your Firewall settings (see IP addresses ) or your communications infrastructure configuration (see Configuration Guides ).

For Caller Name Lookup setup please (CNAM).

Once you have saved changes to your Trunk in your Twilio Console, you should test Caller Name Lookups using a PBX enabled phone line.

To test this feature, first ensure that your phone line is connected to a Trunk where Caller Name Lookups are enabled.

Using an outside phone line that is connected to the PSTN (such as a personal cell-phone) place a call to the phone line, and you should expect to see your name in the 'From' or "P-Asserted Identity" header of the SIP INVITE for the incoming call.

Finally, check your Twilio Console Call log (Elastic SIP Trunking > Logs) and confirm to see that the Caller Name appears along with the telephone number in the 'From' column.

• Caller Name Lookups are enabled on a per-trunk basis.
• Please ensure you enable Caller Name Lookups for each trunk on which you wish to see incoming Caller ID.
• Caller Name Lookup only searches parameters sent in the "From" or "P-Asserted Identity" headers, this does not include remote-party ID

Note that Caller Name lookups for US/CAN numbers are billed per lookup, even if data may not be available. Currently, requesting Caller Name Lookup for international numbers will return null values, but will not be billed.

You can check that your communications infrastructure was properly configured with your Twilio Numbers for Emergency Calling by placing a test call, click here for details.