Issue regarding SipAddHeader

Hi,

I am using asterisk-1.6.0.3 on linux platform. I want to add a sip header when a call is routed through the Asterisk. I tried using SipAddHeader and SipSetHeader function in the sip.conf but it did not work. Is there any other setting which needs to enabled to achieve the above functionality.

Any help would be highly appreciated.

thanks in advance…

post up the relevant portion of your dialplan…