nope, it uses an callinfo header:
http://lists.digium.com/pipermail/asterisk-users/2005-January/086462.html
On Mon, 14 Feb 2005 19:41:23 +0800, Craig Guy <cguy@bigpond.net.au>
wrote:> I was browsing through the web config of a Sipura SPA-841 (Firmware 2.0.13)
> and noticed a setting marked 'paging' under supplementary services
on the
> Phone settings page on the advanced admin login. Anyone know how it might
> be used? Could it be like the Snom -
>
> exten => 10,1,SetVar(VXML_URL=intercom=true)
> exten => 10,2,Dial(SIP/testuser)
>
> Craig
>
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