Troubleshooting solutions, Why is my display blank, Why is my speakerphone not working – Aastra Telecom 480i CT (Release 1.4) User Manual

Page 61: Why can’t i get a dial tone, Why doesn’t my phone ring, Why is my handset not working, What are services, and how do i use them, How do i find the ip address of my phone, Troubl eshooting s o lutions