Some of the links below are currently inactive but will be updated prior to the launch of the new Form 477 filing interface on July 31, 2014.
Who Must File Form 477?
Complete Instructions: PDF | Kindle | iBook
User Guide for Filing Interface: PDF | Kindle | iBook
Information on Each Section of Form 477
Mobile Voice Subscription:
Terms | FAQs
Explanations and Comments:
Method Used to Assign Mobile Subscriptions to State | Method Used to Determine Number of Interconnected VoIP Subscriptions Reported
For assistance with filing Form 477, please call 1-877-480-3201 or 1-717-338-2824 (TTY), or submit a request online via e-support.