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Support - Overview


If you need assistance, service, or support on your Avaya, Lucent, or legacy AT&T telephone system, support on your Avaya IP Telephony or data network systems, or for general technical assistance or inquiries, please fill out the form below and we will contact you as soon as possible. The more information you can give us about your support issue the better we can serve you. Please remember that our current Maintenance & Support Customers do get precedence.

Phones - Quick Reference Guides

Click here to find Quick Reference Guides for your Avaya phone sets. If you can’t find what you’re looking for just fill out the Support Request from below or call us for more information.


E-Tel Systems
Click here to find Quick Reference Guides for your Avaya phone sets.
No calls going through?
Can you dial another internal extension? If so, you’ll want to call your Carrier as well.

Phone System FAQs

  • Reset / change the time
  • Closing early for a Holiday?
  • Reset user Voicemail Password
  • Change a user name and Password
For more answers on these and many other question please fill out the Support Request From or call us right away!
Industry Technical Acronyms



E-TEL Systems  |  43766 Trade Center Place  |  Suite 130  |  Dulles, VA 20166
Telephone: 703.904.1700 | Fax: 703.810.8370
Email: info@comstar-usa.com

E-Tel Systems

IP Telephony & IP Infrastructure System Support In Northern VA

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