Confirm that the system is correctly set, perform the following tests

Confirm that the system is correctly set, perform the following tests:
 If you run into an issue with any of these tests, refer to Table 3 Troubleshooting Guide. Test an outgoing call to a local number. Check for ringback, 2-way audio and quality.
1. Test an outgoing call to a long distance number. Check for ringback, 2-way audio and quality.
2. Test an outgoing call to an international number. Check for ringback, 2-way audio and quality.
3. Test a outgoing call lasting more than 15 minutes.
4. Test multiple call concurrences on outgoing calls. Setup multiple calls to PSTN.
5. Test an outgoing call to an Operator ‘0’.
6. Test an outgoing call to directory assistance ‘411’.
7. Test a 911 call.

Identify to the operator that this is a TEST!
8. Test an incoming call to an internal DID. Check for ringback, 2-way audio and quality.
9. Test an incoming call to an auto-attendant. Check DTMF and audio quality.
10. Test transferring calls off-site.
11. Test an outgoing call to an auto-attendant and verify DTMF.