Aastra Telecom AastraLink Pro 160 - Manual (Page 53)

Managing IP Phone Users
41-001190-02 Rev. 01, Rel. 1.2 3-9
Configuring Aastra IP Phone Accounts
• SIP DID Number
Specifies the SIP Direct Inward Dialing (DID) number to this IP phone. A
DID number is an individual telephone number assigned to this phone that
allows an outside caller to dial directly from incoming SIP trunk calls to the
users extension, without having to route via the Operator or IVR menu
system.