Tech Support
Normal Support Hours
08:00 – 17:30 MST
Monday through Friday, excluding company holidays
For ALL Support Requests
Initial Contact
Main USDD Number: +1 602-687-1730 or
Toll-free: +1 877-551-8733
Email: support@usdd.com
During Normal Business Hours
This call will be answered and routed to an available support professional. If no personnel are available, you will be offered the ability to leave a voice mail message. This message will be emailed to all engineering and support personnel.
After Normal Business Hours
If the failure affects all alerting at a station, all alerting system-wide, or VoiceAlert over Radio, select the Support option from the telephone menu. This will forward your call to the on-call support engineer.
If No Answer or Callback
Please see our Emergency Contacts page.