SIP Messages
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SIPxNano IP-PBX Getting Started Guide
A • Session Initiation Protocol (SIP)
Successful consultative transfer
Figure 59. Successful consultative transfer
SIP URLs
Instead of only being assigned to specific devices the way that telephone numbers traditionally are assigned,
you can assign SIP URLs to both a specific device and to the individual users who participate in SIP sessions.
As a result, when a phone call (or other interactive session) is made to a SIP address, it can be routed either to
a specific location, or to the appropriate individual, regardless of a change in physical location or IP telephone
device.
The formats of some sample SIP URLs might appear as:
The From and To fields in every SIP message header contain the SIP URLs of the session’s originator and
target.