Aastra 9143i Series Administrator's Manual page 593

You can enable or disable this feature on a global or per-line basis using the
configuration files only.
Configuring SIP Diversion Display on the Phone
Use the following procedures to configure SIP diversion display on the IP phones.
Configuration Files
For specific parameters you can set in the configuration files, see Appendix A, the section,
Display" on page A-183.
Limitations
• The diversion header assumes that the the ID of the 'diverted' caller is passed
in a URI style manner.
• This feature relies on the server supporting and generating the Diversion
header; the phone does not generate the header itself.
• Diversion header parameters such as counter, limit, privacy, screen, and
extension are not recognized or supported by the phone. However, they are
still passed along during the diversion process.
41-001160-03 Rev 00, Release 2.5
Note: If proxy servers exist in the network, it is possible that multiple
diversions can take place on the phones. When multiple diversion
headers are returned in a single 302 response back to the originating
phone, the phone that originated the call (i.e., Tim's phone in above
example) displays the URI of the newest (first encountered) Diversion
header, but displays the REASON of the oldest (last encountered)
Diversion Header. The phone that receives the diverted call (i.e.,
Roger's phone in example above) displays the information of the oldest
diverted call (last encountered).
Configuring Operational Features
Operational Features
"SIP Diversion
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