SIP IP Phone Administrator Guide
Models 53i, 55i, 57i, and 57i CT
© 2007 Aastra Telecom Inc.
If you’ve read this owner’s manual and consulted the Troubleshooting section and
still have problems, please visit our website at www.aastratelecom.com or call 1-800-574-1611
for technical assistance.
41-001160-00
Release 2.1, Rev 04
August 2007