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Administrator’s Guide for SIP-T2xP IP Phones76Completion field.3. Press the Save soft key to accept the change.Anonymous CallAnonymous call allows the caller to conceal the identity from the callee. The callee’sphone LCD screen prompts an incoming call from anonymity. Anonymous call isconfigurable on a per-line basis.Example of anonymous SIP header:Via: SIP/2.0/UDP 10.2.8.183:5063;branch=z9hG4bK1535948896From: "Anonymous" <sip:anonymous@anonymous.invalid>;tag=128043702To: Call-ID: 1773251036@10.2.8.183CSeq: 1 INVITEContact: Content-Type: application/sdpAllow: INVITE, INFO, PRACK, ACK, BYE, CANCEL, OPTIONS, NOTIFY, REGISTER, SUBSCRIBE, REFER,PUBLISH, UPDATE, MESSAGEMax-Forwards: 70User-Agent: Yealink SIP-T28P 2.71.0.140Privacy: idSupported: replacesAllow-Events: talk,hold,conference,refer,check-syncP-Preferred-Identity: Content-Length: 302The anonymous call on code and anonymous call off code configured on IP phonesare used to activate/deactivate the server-side anonymous call feature. They may varyon different servers. Anonymous Code allows IP phones to send anonymous code toactivate/deactivate the server-side anonymous call feature.ProcedureAnonymous call can be configured using the configuration files or locally.Configuration File .cfgConfigure anonymous call.For more information, refer toAnonymous Call on page 282.Local Web User InterfaceConfigure anonymous call.Navigate to:http:///servlet?p=account-basic&q=load&acc=0
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