Cisco SPA303 Administration Manual page 302

Cisco SPA IP Phone Field Reference
Ext Tab
Cisco Small Business SPA300 Series, SPA500 Series, and WIP310 IP Phone Administration Guide
Parameter
Auth INVITE
Ntfy Refer On 1xx-To-Inv
Use Anonymous With RPID
Set G729annexb
Description
When enabled, authorization is required for initial
incoming INVITE requests from the SIP proxy.
If set to yes, as a transferee, the phone will send a
NOTIFY with Event:Refer to the transferor for any 1xx
response returned by the transfer target, on the
transfer call leg.
If set to no, the phone will only send a NOTIFY for final
responses (200 and higher).
NOTE Not applicable to the WIP310.
This parameter applies only if <SIP Remote-Party-ID>
is set to yes; otherwise, it is ignored.
If the parameter is set to yes, the FROM header's
display-name and user-id fields are set to anonymous
when the caller blocks his caller-id. If the parameter is
set to no, the FROM header's display-name and user-id
are not masked. The Remote-Party-ID header indicates
privacy=full when the caller wishes to block his caller-
id.
Default: yes.
NOTE Not applicable to the WIP310.
Configure G.729 Annex B settings.
NOTE Not applicable to Cisco SPA525G.
B
300