Table Of Contents

Appendix D: Call Forwarding Directives

Appendix D: Call Forwarding Directives

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Table 11 Call Forwarding Directives 

Directive Name	Directive Definition	Valid Directive Values
CallForwardUnconditional	Forwards calls unconditionally.	On (forward) and Off (do not forward).
CallForwardNoAnswer	Forwards calls when a call is not answered within a designated amount of time.	On (forward) and Off (do not forward).
CallForwardBusy	Forwards calls when when the called party is busy (a SIP 486 Busy Here response is received).	On (forward) and Off (do not forward).
CallForwardUnavailable	Forwards calls when a user-agent client (UAC) is unavailable. Calls for users who are listed in the subscriber database but lack a valid registration, or who have a valid registration but do not respond within a designated time, are forwarded to the call-forward-unavailable location.	On (forward) and Off (do not forward).
CallForwardNoAnswerTimer	Time (in milliseconds) after which to forward an unanswered call.	Default is 24000 (24 seconds). This directive requires that Call Forward No Answer be set to On.
CallForwardUnavailableTimer	Time (in milliseconds) after which to forward a call when a UAC is unavailable.	Default is 24000 (24 seconds). This directive requires that Call Forward Unavailable be set to On.
AddDiversionHeader	Includes the CC-Diversion header in SIP messages. Inclusion enables conveyance of call-redirection information during call setup.	Valid values are On (include) and Off (exclude). Default is On if call forwarding is enabled.
DiversionHeaderName	Name used for diversion headers generated by this proxy server.	Valid values are Diversion, CC-Diversion, and CC-Redirect. Default is CC-Diversion.