Aastra Telecom SISIP 57I CT - Manual (Page 552)

How to Create an XML Application
G-12 41-001160-00, Rev 01 Release 2.0
IP Phone Administrator Guide
Appendix G
IP Phone 53i
Note: You can view all 5 lines at once on the 55i, 57i and 57i CT IP
phones. You can view only 2 lines at a time (up to 5 lines) on the 53i IP
phone.
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