AASTRA 6757i Installation Guide EN - Manual (Page 8)

2 Model 57i IP Phone Installation Guide
Introduction
SIP IP Phone Aastra 53i, 55i, 57i, 57i CT Administrator Guide – is designed
for network administrators, system administrators, developers and
partners who need information on installing this product on an IP network.
Aastra Model 57i IP Phone User Guide – explains the most commonly used
IP telephone features for an end user.
These guides along with release notes, system updates, etc. can be
downloaded from our Web site at www.aastratelecom.com/IPPhones.